2025-10-09 09:33:29 +00:00
132 changed files with 3123 additions and 1546 deletions
--- a/common/web/src/main/kotlin/com/sangdol/common/web/exception/GlobalExceptionhandler.kt
+++ b/common/web/src/main/kotlin/com/sangdol/common/web/exception/GlobalExceptionhandler.kt
@ -1,6 +1,5 @@
 package com.sangdol.common.web.exception

-import com.sangdol.common.log.constant.LogType
 import com.sangdol.common.types.exception.CommonErrorCode
 import com.sangdol.common.types.exception.ErrorCode
 import com.sangdol.common.types.exception.RoomescapeException
@ -31,7 +30,7 @@ class GlobalExceptionHandler(
        val httpStatus: HttpStatus = errorCode.httpStatus
        val errorResponse = CommonErrorResponse(errorCode)

-        logException(servletRequest, httpStatus, errorResponse, e)
+        log.info { convertExceptionLogMessage(servletRequest, httpStatus, errorResponse, e) }

        return ResponseEntity
            .status(httpStatus.value())
@ -57,7 +56,7 @@ class GlobalExceptionHandler(
        val httpStatus: HttpStatus = errorCode.httpStatus
        val errorResponse = CommonErrorResponse(errorCode)

-        logException(servletRequest, httpStatus, errorResponse, e)
+        log.warn { convertExceptionLogMessage(servletRequest, httpStatus, errorResponse, e) }

        return ResponseEntity
            .status(httpStatus.value())
@ -75,30 +74,26 @@ class GlobalExceptionHandler(
        val httpStatus: HttpStatus = errorCode.httpStatus
        val errorResponse = CommonErrorResponse(errorCode)

-        logException(servletRequest, httpStatus, errorResponse, e)
+        log.warn { convertExceptionLogMessage(servletRequest, httpStatus, errorResponse, e) }

        return ResponseEntity
            .status(httpStatus.value())
            .body(errorResponse)
    }

-    private fun logException(
+    private fun convertExceptionLogMessage(
        servletRequest: HttpServletRequest,
        httpStatus: HttpStatus,
        errorResponse: CommonErrorResponse,
        exception: Exception
-    ) {
-        val type = if (httpStatus.isClientError()) LogType.APPLICATION_FAILURE else LogType.UNHANDLED_EXCEPTION
+    ): String {
        val actualException: Exception? = if (errorResponse.message == exception.message) null else exception

-        val logMessage = messageConverter.convertToResponseMessage(
-            type = type,
+        return messageConverter.convertToErrorResponseMessage(
            servletRequest = servletRequest,
-            httpStatusCode = httpStatus.value(),
+            httpStatus = httpStatus,
            responseBody = errorResponse,
            exception = actualException
        )
-
-        log.warn { logMessage }
    }
 }
--- a/common/web/src/main/kotlin/com/sangdol/common/web/support/log/WebLogMessageConverter.kt
+++ b/common/web/src/main/kotlin/com/sangdol/common/web/support/log/WebLogMessageConverter.kt
@ -2,6 +2,7 @@ package com.sangdol.common.web.support.log

 import com.fasterxml.jackson.databind.ObjectMapper
 import com.sangdol.common.log.constant.LogType
+import com.sangdol.common.types.web.HttpStatus
 import jakarta.servlet.http.HttpServletRequest

 class WebLogMessageConverter(
@ -49,4 +50,19 @@ class WebLogMessageConverter(

        return objectMapper.writeValueAsString(payload)
    }
+
+    fun convertToErrorResponseMessage(
+        servletRequest: HttpServletRequest,
+        httpStatus: HttpStatus,
+        responseBody: Any? = null,
+        exception: Exception? = null,
+    ): String {
+        val type = if (httpStatus.isClientError()) {
+            LogType.APPLICATION_FAILURE
+        } else {
+            LogType.UNHANDLED_EXCEPTION
+        }
+
+        return convertToResponseMessage(type, servletRequest, httpStatus.value(), responseBody, exception)
+    }
 }
--- a/common/web/src/test/kotlin/com/sangdol/common/web/support/log/WebLogMessageConverterTest.kt
+++ b/common/web/src/test/kotlin/com/sangdol/common/web/support/log/WebLogMessageConverterTest.kt
@ -168,5 +168,27 @@ class WebLogMessageConverterTest : FunSpec({
                this["exception"] shouldBe null
            }
        }
+
+        test("4xx 에러가 발생하면 ${LogType.APPLICATION_FAILURE} 타입으로 변환한다.") {
+            val result = converter.convertToErrorResponseMessage(
+                servletRequest = servletRequest,
+                httpStatus = HttpStatus.BAD_REQUEST,
+            )
+
+            assertSoftly(objectMapper.readValue(result, LinkedHashMap::class.java)) {
+                this["type"] shouldBe LogType.APPLICATION_FAILURE.name
+            }
+        }
+
+        test("5xx 에러가 발생하면 ${LogType.UNHANDLED_EXCEPTION} 타입으로 변환한다.") {
+            val result = converter.convertToErrorResponseMessage(
+                servletRequest = servletRequest,
+                httpStatus = HttpStatus.INTERNAL_SERVER_ERROR,
+            )
+
+            assertSoftly(objectMapper.readValue(result, LinkedHashMap::class.java)) {
+                this["type"] shouldBe LogType.UNHANDLED_EXCEPTION.name
+            }
+        }
    }
 })
--- a/frontend/src/api/payment/PaymentTypes.ts
+++ b/frontend/src/api/payment/PaymentTypes.ts
@ -2,7 +2,6 @@ export interface PaymentConfirmRequest {
    paymentKey: string;
    orderId: string;
    amount: number;
-    paymentType: PaymentType;
 }

 export interface PaymentCancelRequest {
--- a/frontend/src/api/schedule/scheduleTypes.ts
+++ b/frontend/src/api/schedule/scheduleTypes.ts
@ -1,5 +1,3 @@
-import type { Difficulty } from '@_api/theme/themeTypes';
-
 export type ScheduleStatus = 'AVAILABLE' | 'HOLD' | 'RESERVED' | 'BLOCKED';

 export const ScheduleStatus = {
@ -40,16 +38,35 @@ export interface AdminScheduleSummaryListResponse {
 }

 // Public
+export interface ScheduleResponse {
+    id: string;
+    date: string;
+    startFrom: string;
+    endAt: string;
+    status: ScheduleStatus;
+}
+
+export interface ScheduleThemeInfo {
+    id: string;
+    name: string;
+}
+
+export interface ScheduleStoreInfo {
+    id: string;
+    name: string;
+}
+
+export interface ScheduleWithStoreAndThemeResponse {
+    schedule: ScheduleResponse,
+    theme: ScheduleThemeInfo,
+    store: ScheduleStoreInfo,
+}
+
 export interface ScheduleWithThemeResponse {
-    id: string,
-    startFrom: string,
-    endAt: string,
-    themeId: string,
-    themeName: string,
-    themeDifficulty: Difficulty,
-    status: ScheduleStatus
+    schedule: ScheduleResponse,
+    theme: ScheduleThemeInfo
 }

 export interface ScheduleWithThemeListResponse {
    schedules: ScheduleWithThemeResponse[];
-}
+}
--- a/frontend/src/pages/ReservationStep1Page.tsx
+++ b/frontend/src/pages/ReservationStep1Page.tsx
@ -1,17 +1,17 @@
-import {isLoginRequiredError} from '@_api/apiClient';
-import {fetchSidoList, fetchSigunguList} from '@_api/region/regionAPI';
-import {type SidoResponse, type SigunguResponse} from '@_api/region/regionTypes';
-import {fetchSchedules, holdSchedule} from '@_api/schedule/scheduleAPI';
-import {ScheduleStatus, type ScheduleWithThemeResponse} from '@_api/schedule/scheduleTypes';
-import {getStores} from '@_api/store/storeAPI';
-import {type SimpleStoreResponse} from '@_api/store/storeTypes';
-import {fetchThemeById} from '@_api/theme/themeAPI';
-import {DifficultyKoreanMap, type ThemeInfoResponse} from '@_api/theme/themeTypes';
+import { isLoginRequiredError } from '@_api/apiClient';
+import { fetchSidoList, fetchSigunguList } from '@_api/region/regionAPI';
+import { type SidoResponse, type SigunguResponse } from '@_api/region/regionTypes';
+import { type ReservationData } from '@_api/reservation/reservationTypes';
+import { fetchSchedules, holdSchedule } from '@_api/schedule/scheduleAPI';
+import { ScheduleStatus, type ScheduleWithThemeResponse } from '@_api/schedule/scheduleTypes';
+import { getStores } from '@_api/store/storeAPI';
+import { type SimpleStoreResponse } from '@_api/store/storeTypes';
+import { fetchThemeById } from '@_api/theme/themeAPI';
+import { DifficultyKoreanMap, type ThemeInfoResponse } from '@_api/theme/themeTypes';
 import '@_css/reservation-v2-1.css';
-import React, {useEffect, useState} from 'react';
-import {useLocation, useNavigate} from 'react-router-dom';
-import {type ReservationData} from '@_api/reservation/reservationTypes';
-import {formatDate} from 'src/util/DateTimeFormatter';
+import React, { useEffect, useState } from 'react';
+import { useLocation, useNavigate } from 'react-router-dom';
+import { formatDate } from 'src/util/DateTimeFormatter';

 const ReservationStep1Page: React.FC = () => {
    const [selectedDate, setSelectedDate] = useState<Date>(new Date());
@ -76,7 +76,7 @@ const ReservationStep1Page: React.FC = () => {
            fetchSchedules(selectedStore.id, dateStr)
                .then(res => {
                    const grouped = res.schedules.reduce((acc, schedule) => {
-                        const key = schedule.themeName;
+                        const key = schedule.theme.name;
                        if (!acc[key]) acc[key] = [];
                        acc[key].push(schedule);
                        return acc;
@ -111,11 +111,11 @@ const ReservationStep1Page: React.FC = () => {
    const handleConfirmReservation = () => {
        if (!selectedSchedule) return;

-        holdSchedule(selectedSchedule.id)
+        holdSchedule(selectedSchedule.schedule.id)
            .then(() => {
-                fetchThemeById(selectedSchedule.themeId).then(res => {
+                fetchThemeById(selectedSchedule.theme.id).then(res => {
                    const reservationData: ReservationData = {
-                        scheduleId: selectedSchedule.id,
+                        scheduleId: selectedSchedule.schedule.id,
                        store: {
                            id: selectedStore!.id,
                            name: selectedStore!.name,
@ -128,8 +128,8 @@ const ReservationStep1Page: React.FC = () => {
                            maxParticipants: res.maxParticipants,
                        },
                        date: selectedDate.toLocaleDateString('en-CA'),
-                        startFrom: selectedSchedule.startFrom,
-                        endAt: selectedSchedule.endAt,
+                        startFrom: selectedSchedule.schedule.startFrom,
+                        endAt: selectedSchedule.schedule.endAt,
                    };
                    navigate('/reservation/form', {state: reservationData});
                }).catch(handleError);
@ -248,23 +248,23 @@ const ReservationStep1Page: React.FC = () => {
                <h3>3. 시간 선택</h3>
                <div className="schedule-list">
                    {Object.keys(schedulesByTheme).length > 0 ? (
-                        Object.entries(schedulesByTheme).map(([themeName, schedules]) => (
+                        Object.entries(schedulesByTheme).map(([themeName, scheduleAndTheme]) => (
                            <div key={themeName} className="theme-schedule-group">
                                <div className="theme-header">
                                    <h4>{themeName}</h4>
-                                    <button onClick={() => openThemeModal(schedules[0].themeId)}
+                                    <button onClick={() => openThemeModal(scheduleAndTheme[0].theme.id)}
                                            className="theme-detail-button">상세보기
                                    </button>
                                </div>
                                <div className="time-slots">
-                                    {schedules.map(schedule => (
+                                    {scheduleAndTheme.map(schedule => (
                                        <div
-                                            key={schedule.id}
-                                            className={`time-slot ${selectedSchedule?.id === schedule.id ? 'active' : ''} ${schedule.status !== ScheduleStatus.AVAILABLE ? 'disabled' : ''}`}
-                                            onClick={() => schedule.status === ScheduleStatus.AVAILABLE && setSelectedSchedule(schedule)}
+                                            key={schedule.schedule.id}
+                                            className={`time-slot ${selectedSchedule?.schedule.id === schedule.schedule.id ? 'active' : ''} ${schedule.schedule.status !== ScheduleStatus.AVAILABLE ? 'disabled' : ''}`}
+                                            onClick={() => schedule.schedule.status === ScheduleStatus.AVAILABLE && setSelectedSchedule(schedule)}
                                        >
-                                            {`${schedule.startFrom} ~ ${schedule.endAt}`}
-                                            <span className="time-availability">{getStatusText(schedule.status)}</span>
+                                            {`${schedule.schedule.startFrom} ~ ${schedule.schedule.endAt}`}
+                                            <span className="time-availability">{getStatusText(schedule.schedule.status)}</span>
                                        </div>
                                    ))}
                                </div>
@ -313,8 +313,8 @@ const ReservationStep1Page: React.FC = () => {
                        <div className="modal-section modal-info-grid">
                            <p><strong>날짜:</strong><span>{formatDate(selectedDate.toLocaleDateString('ko-KR'))}</span></p>
                            <p><strong>매장:</strong><span>{selectedStore?.name}</span></p>
-                            <p><strong>테마:</strong><span>{selectedSchedule.themeName}</span></p>
-                            <p><strong>시간:</strong><span>{`${selectedSchedule.startFrom} ~ ${selectedSchedule.endAt}`}</span></p>
+                            <p><strong>테마:</strong><span>{selectedSchedule.theme.name}</span></p>
+                            <p><strong>시간:</strong><span>{`${selectedSchedule.schedule.startFrom} ~ ${selectedSchedule.schedule.endAt}`}</span></p>
                        </div>
                        <div className="modal-actions">
                            <button className="cancel-button" onClick={() => setIsConfirmModalOpen(false)}>취소</button>
--- a/frontend/src/pages/ReservationStep2Page.tsx
+++ b/frontend/src/pages/ReservationStep2Page.tsx
@ -1,8 +1,9 @@
-import { isLoginRequiredError } from '@_api/apiClient';
-import { confirmPayment } from '@_api/payment/paymentAPI';
-import { type PaymentConfirmRequest, PaymentType } from '@_api/payment/PaymentTypes';
+import { confirm } from '@_api/order/orderAPI';
+import type { BookingErrorResponse } from '@_api/order/orderTypes';
+import { type PaymentConfirmRequest } from '@_api/payment/PaymentTypes';
 import { confirmReservation } from '@_api/reservation/reservationAPI';
 import '@_css/reservation-v2-1.css';
+import type { AxiosError } from 'axios';
 import React, { useEffect, useRef } from 'react';
 import { useLocation, useNavigate } from 'react-router-dom';
 import { formatDate } from 'src/util/DateTimeFormatter';
@ -21,17 +22,6 @@ const ReservationStep2Page: React.FC = () => {

    const { reservationId, storeName, themeName, themePrice, totalPrice, date, time, participantCount } = location.state || {};

-    const handleError = (err: any) => {
-        if (isLoginRequiredError(err)) {
-            alert('로그인이 필요해요.');
-            navigate('/login', { state: { from: location } });
-        } else {
-            const message = err.response?.data?.message || '알 수 없는 오류가 발생했습니다.';
-            alert(message);
-            console.error(err);
-        }
-    };
-
    useEffect(() => {
        if (!reservationId) {
            alert('잘못된 접근입니다.');
@ -66,7 +56,7 @@ const ReservationStep2Page: React.FC = () => {

        const generateRandomString = () =>
            crypto.randomUUID().replace(/-/g, '');
-        
+

        paymentWidgetRef.current.requestPayment({
            orderId: generateRandomString(),
@ -77,13 +67,8 @@ const ReservationStep2Page: React.FC = () => {
                paymentKey: data.paymentKey,
                orderId: data.orderId,
                amount: totalPrice,
-                paymentType: data.paymentType || PaymentType.NORMAL,
            };
-
-            confirmPayment(reservationId, paymentData)
-                .then(() => {
-                    return confirmReservation(reservationId);
-                })
+            confirm(reservationId, paymentData)
                .then(() => {
                    alert('결제가 완료되었어요!');
                    navigate('/reservation/success', {
@ -97,10 +82,50 @@ const ReservationStep2Page: React.FC = () => {
                        }
                    });
                })
-                .catch(handleError);
+                .catch(err => {
+                    const error = err as AxiosError<BookingErrorResponse>;
+                    const errorCode = error.response?.data?.code;
+                    const errorMessage = error.response?.data?.message;
+
+                    if (errorCode === 'B000') {
+                        alert(`예약을 완료할 수 없어요.(${errorMessage})`);
+                        navigate('/reservation');
+                        return;
+                    }
+
+                    const trial = error.response?.data?.trial || 0;
+                    if (trial < 2) {
+                        alert(errorMessage);
+                        return;
+                    }
+                    alert(errorMessage);
+
+                    setTimeout(() => {
+                        const agreeToOnsitePayment = window.confirm('재시도 횟수를 초과했어요. 현장결제를 하시겠어요?');
+
+                        if (agreeToOnsitePayment) {
+                            confirmReservation(reservationId)
+                                .then(() => {
+                                    navigate('/reservation/success', {
+                                        state: {
+                                            storeName,
+                                            themeName,
+                                            date,
+                                            time,
+                                            participantCount,
+                                            totalPrice,
+                                        },
+                                    });
+                                });
+                        } else {
+                            alert('다음에 다시 시도해주세요. 메인 페이지로 이동할게요.');
+                            navigate('/');
+                        }
+                    }, 100);
+                });
        }).catch((error: any) => {
            console.error("Payment request error:", error);
-            alert("결제 요청 중 오류가 발생했습니다.");
+            alert("결제 요청 중 오류가 발생했어요. 새로고침 후 다시 시도해주세요.");
        });
    };

--- a/service/src/main/kotlin/com/sangdol/roomescape/admin/business/AdminService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/admin/business/AdminService.kt
@ -1,7 +1,7 @@
 package com.sangdol.roomescape.admin.business

-import com.sangdol.roomescape.admin.business.dto.AdminLoginCredentials
-import com.sangdol.roomescape.admin.business.dto.toCredentials
+import com.sangdol.roomescape.admin.dto.AdminLoginCredentials
+import com.sangdol.roomescape.admin.mapper.toCredentials
 import com.sangdol.roomescape.admin.exception.AdminErrorCode
 import com.sangdol.roomescape.admin.exception.AdminException
 import com.sangdol.roomescape.admin.infrastructure.persistence.AdminRepository
--- a/service/src/main/kotlin/com/sangdol/roomescape/admin/business/dto/AdminLoginDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/admin/business/dto/AdminLoginDTO.kt
@ -1,10 +1,9 @@
-package com.sangdol.roomescape.admin.business.dto
+package com.sangdol.roomescape.admin.dto

-import com.sangdol.roomescape.admin.infrastructure.persistence.AdminEntity
 import com.sangdol.roomescape.admin.infrastructure.persistence.AdminPermissionLevel
 import com.sangdol.roomescape.admin.infrastructure.persistence.AdminType
-import com.sangdol.roomescape.auth.web.LoginCredentials
-import com.sangdol.roomescape.auth.web.LoginSuccessResponse
+import com.sangdol.roomescape.auth.dto.LoginCredentials
+import com.sangdol.roomescape.auth.dto.LoginSuccessResponse

 data class AdminLoginCredentials(
    override val id: Long,
@ -22,18 +21,9 @@ data class AdminLoginCredentials(
    )
 }

-fun AdminEntity.toCredentials() = AdminLoginCredentials(
-    id = this.id,
-    password = this.password,
-    name = this.name,
-    type = this.type,
-    storeId = this.storeId,
-    permissionLevel = this.permissionLevel
-)
-
 data class AdminLoginSuccessResponse(
    override val accessToken: String,
    override val name: String,
    val type: AdminType,
    val storeId: Long?,
-) : LoginSuccessResponse()
+) : LoginSuccessResponse()
--- a/service/src/main/kotlin/com/sangdol/roomescape/admin/mapper/AdminMappingExtensions.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/admin/mapper/AdminMappingExtensions.kt
@ -0,0 +1,13 @@
+package com.sangdol.roomescape.admin.mapper
+
+import com.sangdol.roomescape.admin.dto.AdminLoginCredentials
+import com.sangdol.roomescape.admin.infrastructure.persistence.AdminEntity
+
+fun AdminEntity.toCredentials() = AdminLoginCredentials(
+    id = this.id,
+    password = this.password,
+    name = this.name,
+    type = this.type,
+    storeId = this.storeId,
+    permissionLevel = this.permissionLevel
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/auth/business/AuthService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/auth/business/AuthService.kt
@ -1,10 +1,14 @@
 package com.sangdol.roomescape.auth.business

 import com.sangdol.roomescape.admin.business.AdminService
+import com.sangdol.roomescape.auth.business.domain.PrincipalType
+import com.sangdol.roomescape.auth.dto.LoginContext
+import com.sangdol.roomescape.auth.dto.LoginCredentials
+import com.sangdol.roomescape.auth.dto.LoginRequest
+import com.sangdol.roomescape.auth.dto.LoginSuccessResponse
 import com.sangdol.roomescape.auth.exception.AuthErrorCode
 import com.sangdol.roomescape.auth.exception.AuthException
 import com.sangdol.roomescape.auth.infrastructure.jwt.JwtUtils
-import com.sangdol.roomescape.auth.web.*
 import com.sangdol.roomescape.user.business.UserService
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
--- a/service/src/main/kotlin/com/sangdol/roomescape/auth/business/LoginHistoryService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/auth/business/LoginHistoryService.kt
@ -3,8 +3,8 @@ package com.sangdol.roomescape.auth.business
 import com.sangdol.common.persistence.IDGenerator
 import com.sangdol.roomescape.auth.infrastructure.persistence.LoginHistoryEntity
 import com.sangdol.roomescape.auth.infrastructure.persistence.LoginHistoryRepository
-import com.sangdol.roomescape.auth.web.LoginContext
-import com.sangdol.roomescape.auth.web.PrincipalType
+import com.sangdol.roomescape.auth.dto.LoginContext
+import com.sangdol.roomescape.auth.business.domain.PrincipalType
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
 import org.springframework.stereotype.Service
--- a/service/src/main/kotlin/com/sangdol/roomescape/auth/business/domain/PrincipalType.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/auth/business/domain/PrincipalType.kt
@ -0,0 +1,5 @@
+package com.sangdol.roomescape.auth.business.domain
+
+enum class PrincipalType {
+    USER, ADMIN
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/auth/docs/AuthAPI.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/auth/docs/AuthAPI.kt
@ -1,8 +1,8 @@
 package com.sangdol.roomescape.auth.docs

 import com.sangdol.common.types.web.CommonApiResponse
-import com.sangdol.roomescape.auth.web.LoginRequest
-import com.sangdol.roomescape.auth.web.LoginSuccessResponse
+import com.sangdol.roomescape.auth.dto.LoginRequest
+import com.sangdol.roomescape.auth.dto.LoginSuccessResponse
 import com.sangdol.roomescape.auth.web.support.Public
 import com.sangdol.roomescape.auth.web.support.User
 import com.sangdol.roomescape.common.types.CurrentUserContext
--- a/service/src/main/kotlin/com/sangdol/roomescape/auth/dto/AuthDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/auth/dto/AuthDTO.kt
@ -1,21 +1,12 @@
-package com.sangdol.roomescape.auth.web
+package com.sangdol.roomescape.auth.dto

-import jakarta.servlet.http.HttpServletRequest
-
-enum class PrincipalType {
-    USER, ADMIN
-}
+import com.sangdol.roomescape.auth.business.domain.PrincipalType

 data class LoginContext(
    val ipAddress: String,
    val userAgent: String,
 )

-fun HttpServletRequest.toLoginContext() = LoginContext(
-    ipAddress = this.remoteAddr,
-    userAgent = this.getHeader("User-Agent")
-)
-
 data class LoginRequest(
    val account: String,
    val password: String,
--- a/service/src/main/kotlin/com/sangdol/roomescape/auth/infrastructure/persistence/LoginHistoryEntity.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/auth/infrastructure/persistence/LoginHistoryEntity.kt
@ -1,7 +1,7 @@
 package com.sangdol.roomescape.auth.infrastructure.persistence

 import com.sangdol.common.persistence.PersistableBaseEntity
-import com.sangdol.roomescape.auth.web.PrincipalType
+import com.sangdol.roomescape.auth.business.domain.PrincipalType
 import jakarta.persistence.*
 import org.springframework.data.annotation.CreatedDate
 import org.springframework.data.jpa.domain.support.AuditingEntityListener
--- a/service/src/main/kotlin/com/sangdol/roomescape/auth/web/AuthController.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/auth/web/AuthController.kt
@ -3,6 +3,9 @@ package com.sangdol.roomescape.auth.web
 import com.sangdol.common.types.web.CommonApiResponse
 import com.sangdol.roomescape.auth.business.AuthService
 import com.sangdol.roomescape.auth.docs.AuthAPI
+import com.sangdol.roomescape.auth.dto.LoginContext
+import com.sangdol.roomescape.auth.dto.LoginRequest
+import com.sangdol.roomescape.auth.dto.LoginSuccessResponse
 import com.sangdol.roomescape.auth.web.support.User
 import com.sangdol.roomescape.common.types.CurrentUserContext
 import jakarta.servlet.http.HttpServletRequest
@ -36,3 +39,8 @@ class AuthController(
        return ResponseEntity.ok().build()
    }
 }
+
+fun HttpServletRequest.toLoginContext() = LoginContext(
+    ipAddress = this.remoteAddr,
+    userAgent = this.getHeader("User-Agent")
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/business/OrderPostProcessorService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/business/OrderPostProcessorService.kt
@ -0,0 +1,60 @@
+package com.sangdol.roomescape.order.business
+
+import com.sangdol.common.persistence.IDGenerator
+import com.sangdol.common.persistence.TransactionExecutionUtil
+import com.sangdol.roomescape.order.infrastructure.persistence.PostOrderTaskEntity
+import com.sangdol.roomescape.order.infrastructure.persistence.PostOrderTaskRepository
+import com.sangdol.roomescape.payment.business.PaymentService
+import com.sangdol.roomescape.payment.dto.PaymentGatewayResponse
+import com.sangdol.roomescape.reservation.business.ReservationService
+import io.github.oshai.kotlinlogging.KLogger
+import io.github.oshai.kotlinlogging.KotlinLogging
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Propagation
+import org.springframework.transaction.annotation.Transactional
+import java.time.Instant
+
+private val log: KLogger = KotlinLogging.logger {}
+
+@Service
+class OrderPostProcessorService(
+    private val idGenerator: IDGenerator,
+    private val reservationService: ReservationService,
+    private val paymentService: PaymentService,
+    private val postOrderTaskRepository: PostOrderTaskRepository,
+    private val transactionExecutionUtil: TransactionExecutionUtil
+) {
+    @Transactional(propagation = Propagation.REQUIRES_NEW)
+    fun processAfterPaymentConfirmation(
+        reservationId: Long,
+        paymentResponse: PaymentGatewayResponse
+    ) {
+        val paymentKey = paymentResponse.paymentKey
+        try {
+            log.info { "[processAfterPaymentConfirmation] 결제 정보 저장 및 예약 확정 처리 시작: reservationId=${reservationId}, paymentKey=${paymentKey}" }
+
+            val paymentCreateResponse = paymentService.savePayment(reservationId, paymentResponse)
+            reservationService.confirmReservation(reservationId)
+
+            log.info {
+                "[processAfterPaymentConfirmation] 결제 정보 저장 및 예약 확정 처리 완료: reservationId=${reservationId}, paymentKey=${paymentKey}, paymentId=${paymentCreateResponse.paymentId}, paymentDetailId=${paymentCreateResponse.detailId}"
+            }
+        } catch (e: Exception) {
+            log.warn(e) { "[processAfterPaymentConfirmation] 결제 정보 저장 및 예약 확정 처리 실패. 작업 저장 시작: reservationId=${reservationId}, paymentKey=$paymentKey}" }
+
+            transactionExecutionUtil.withNewTransaction(isReadOnly = false) {
+                PostOrderTaskEntity(
+                    id = idGenerator.create(),
+                    reservationId = reservationId,
+                    paymentKey = paymentKey,
+                    trial = 1,
+                    nextRetryAt = Instant.now().plusSeconds(30),
+                ).also {
+                    postOrderTaskRepository.save(it)
+                }
+            }
+
+            log.info { "[processAfterPaymentConfirmation] 작업 저장 완료" }
+        }
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/business/OrderService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/business/OrderService.kt
@ -0,0 +1,130 @@
+package com.sangdol.roomescape.order.business
+
+import com.sangdol.common.persistence.IDGenerator
+import com.sangdol.common.persistence.TransactionExecutionUtil
+import com.sangdol.common.types.exception.ErrorCode
+import com.sangdol.common.types.exception.RoomescapeException
+import com.sangdol.roomescape.order.exception.OrderErrorCode
+import com.sangdol.roomescape.order.exception.OrderException
+import com.sangdol.roomescape.order.infrastructure.persistence.AttemptResult
+import com.sangdol.roomescape.order.infrastructure.persistence.PaymentAttemptEntity
+import com.sangdol.roomescape.order.infrastructure.persistence.PaymentAttemptRepository
+import com.sangdol.roomescape.payment.business.PaymentService
+import com.sangdol.roomescape.payment.dto.PaymentConfirmRequest
+import com.sangdol.roomescape.payment.dto.PaymentGatewayResponse
+import com.sangdol.roomescape.payment.exception.PaymentException
+import com.sangdol.roomescape.reservation.business.ReservationService
+import com.sangdol.roomescape.reservation.dto.ReservationStateResponse
+import com.sangdol.roomescape.schedule.business.ScheduleService
+import com.sangdol.roomescape.schedule.dto.ScheduleStateResponse
+import io.github.oshai.kotlinlogging.KLogger
+import io.github.oshai.kotlinlogging.KotlinLogging
+import org.springframework.stereotype.Service
+
+private val log: KLogger = KotlinLogging.logger {}
+
+@Service
+class OrderService(
+    private val idGenerator: IDGenerator,
+    private val reservationService: ReservationService,
+    private val scheduleService: ScheduleService,
+    private val paymentService: PaymentService,
+    private val transactionExecutionUtil: TransactionExecutionUtil,
+    private val orderValidator: OrderValidator,
+    private val paymentAttemptRepository: PaymentAttemptRepository,
+    private val orderPostProcessorService: OrderPostProcessorService
+) {
+
+    fun confirm(reservationId: Long, paymentConfirmRequest: PaymentConfirmRequest) {
+        val trial = paymentAttemptRepository.countByReservationId(reservationId)
+        val paymentKey = paymentConfirmRequest.paymentKey
+
+        log.info { "[confirm] 결제 및 예약 확정 시작: reservationId=${reservationId}, paymentKey=${paymentKey}" }
+
+        try {
+            transactionExecutionUtil.withNewTransaction(isReadOnly = false) {
+                validateAndMarkInProgress(reservationId)
+            }
+
+            val paymentClientResponse: PaymentGatewayResponse =
+                requestConfirmPayment(reservationId, paymentConfirmRequest)
+
+            orderPostProcessorService.processAfterPaymentConfirmation(reservationId, paymentClientResponse)
+        } catch (e: Exception) {
+            val errorCode: ErrorCode = if (e is RoomescapeException) {
+                e.errorCode
+            } else {
+                OrderErrorCode.BOOKING_UNEXPECTED_ERROR
+            }
+
+            throw OrderException(errorCode, e.message ?: errorCode.message, trial)
+        }
+    }
+
+    private fun validateAndMarkInProgress(reservationId: Long) {
+        log.info { "[validateAndMarkInProgress] 예약 확정 가능 여부 검증 시작: reservationId=${reservationId}" }
+        val reservation: ReservationStateResponse = reservationService.findStatusWithLock(reservationId)
+        val schedule: ScheduleStateResponse = scheduleService.findStateWithLock(reservation.scheduleId)
+
+        try {
+            orderValidator.validateCanConfirm(reservation, schedule)
+            log.info { "[validateAndMarkInProgress] 예약 확정 가능 여부 검증 완료: reservationId=${reservationId}" }
+        } catch (e: OrderException) {
+            val errorCode = OrderErrorCode.NOT_CONFIRMABLE
+            throw OrderException(errorCode, e.message)
+        }
+
+        reservationService.markInProgress(reservationId)
+    }
+
+    private fun requestConfirmPayment(
+        reservationId: Long,
+        paymentConfirmRequest: PaymentConfirmRequest
+    ): PaymentGatewayResponse {
+        log.info { "[requestConfirmPayment] 결제 및 이력 저장 시작: reservationId=${reservationId}, paymentKey=${paymentConfirmRequest.paymentKey}" }
+        val paymentResponse: PaymentGatewayResponse
+        var attempt: PaymentAttemptEntity? = null
+
+        try {
+            paymentResponse = paymentService.requestConfirm(paymentConfirmRequest)
+
+            attempt = PaymentAttemptEntity(
+                id = idGenerator.create(),
+                reservationId = reservationId,
+                result = AttemptResult.SUCCESS,
+            )
+        } catch (e: Exception) {
+            val errorCode: String = if (e is PaymentException) {
+                log.info { "[requestConfirmPayment] 결제 요청 실패: reservationId=${reservationId}, paymentKey=${paymentConfirmRequest.paymentKey}" }
+                e.errorCode.name
+            } else {
+                log.warn {
+                    "[requestConfirmPayment] 결제 요청 실패: reservationId=${reservationId}, paymentKey=${paymentConfirmRequest.paymentKey}"
+                }
+                OrderErrorCode.BOOKING_UNEXPECTED_ERROR.name
+            }
+
+            attempt = PaymentAttemptEntity(
+                id = idGenerator.create(),
+                reservationId = reservationId,
+                result = AttemptResult.FAILED,
+                errorCode = errorCode,
+                message = e.message
+            )
+
+            throw e
+        } finally {
+            val savedAttempt: PaymentAttemptEntity? = attempt?.let {
+                log.info { "[requestPayment] 결제 요청 이력 저장 시작: id=${it.id}, reservationId=${it.reservationId}, result=${it.result}, errorCode=${it.errorCode}, message=${it.message}" }
+                paymentAttemptRepository.save(it)
+            }
+            savedAttempt?.also {
+                log.info { "[requestPayment] 결제 요청 이력 저장 완료: id=${savedAttempt.id}" }
+            } ?: run {
+                log.info { "[requestPayment] 결제 요청 이력 저장 실패: reservationId=${reservationId}" }
+            }
+        }
+
+        return paymentResponse
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/business/OrderValidator.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/business/OrderValidator.kt
@ -0,0 +1,66 @@
+package com.sangdol.roomescape.order.business
+
+import com.sangdol.common.utils.KoreaDateTime
+import com.sangdol.roomescape.order.exception.OrderErrorCode
+import com.sangdol.roomescape.order.exception.OrderException
+import com.sangdol.roomescape.order.infrastructure.persistence.PaymentAttemptRepository
+import com.sangdol.roomescape.reservation.dto.ReservationStateResponse
+import com.sangdol.roomescape.reservation.infrastructure.persistence.ReservationStatus
+import com.sangdol.roomescape.schedule.dto.ScheduleStateResponse
+import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus
+import io.github.oshai.kotlinlogging.KLogger
+import io.github.oshai.kotlinlogging.KotlinLogging
+import org.springframework.stereotype.Component
+import java.time.LocalDateTime
+
+private val log: KLogger = KotlinLogging.logger {}
+
+@Component
+class OrderValidator(
+    private val paymentAttemptRepository: PaymentAttemptRepository
+) {
+    fun validateCanConfirm(
+        reservation: ReservationStateResponse,
+        schedule: ScheduleStateResponse
+    ) {
+        if (paymentAttemptRepository.isSuccessAttemptExists(reservation.id)) {
+            log.info { "[validateCanConfirm] 이미 결제 완료된 예약: id=${reservation.id}" }
+            throw OrderException(OrderErrorCode.BOOKING_ALREADY_COMPLETED)
+        }
+
+        validateReservationStatus(reservation)
+        validateScheduleStatus(schedule)
+    }
+
+    private fun validateReservationStatus(reservation: ReservationStateResponse) {
+        when (reservation.status) {
+            ReservationStatus.CONFIRMED -> {
+                log.info { "[validateCanConfirm] 이미 확정된 예약: id=${reservation.id}" }
+                throw OrderException(OrderErrorCode.BOOKING_ALREADY_COMPLETED)
+            }
+            ReservationStatus.EXPIRED -> {
+                log.info { "[validateCanConfirm] 만료된 예약: id=${reservation.id}" }
+                throw OrderException(OrderErrorCode.EXPIRED_RESERVATION)
+            }
+            ReservationStatus.CANCELED -> {
+                log.info { "[validateCanConfirm] 취소된 예약: id=${reservation.id}" }
+                throw OrderException(OrderErrorCode.CANCELED_RESERVATION)
+            }
+            else -> {}
+        }
+    }
+
+    private fun validateScheduleStatus(schedule: ScheduleStateResponse) {
+        if (schedule.status != ScheduleStatus.HOLD) {
+            log.info { "[validateScheduleStatus] 일정 상태 오류: status=${schedule.status}" }
+            throw OrderException(OrderErrorCode.EXPIRED_RESERVATION)
+        }
+
+        val scheduleDateTime = LocalDateTime.of(schedule.date, schedule.startFrom)
+        val nowDateTime = KoreaDateTime.now()
+        if (scheduleDateTime.isBefore(nowDateTime)) {
+            log.info { "[validateScheduleStatus] 과거 시간인 일정으로 인한 실패: scheduleDateTime=${scheduleDateTime}(KST), now=${nowDateTime}(KST)" }
+            throw OrderException(OrderErrorCode.PAST_SCHEDULE)
+        }
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/docs/OrderAPI.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/docs/OrderAPI.kt
@ -0,0 +1,22 @@
+package com.sangdol.roomescape.order.docs
+
+import com.sangdol.common.types.web.CommonApiResponse
+import com.sangdol.roomescape.auth.web.support.UserOnly
+import com.sangdol.roomescape.payment.dto.PaymentConfirmRequest
+import io.swagger.v3.oas.annotations.Operation
+import io.swagger.v3.oas.annotations.responses.ApiResponse
+import io.swagger.v3.oas.annotations.responses.ApiResponses
+import org.springframework.http.ResponseEntity
+import org.springframework.web.bind.annotation.PathVariable
+import org.springframework.web.bind.annotation.RequestBody
+
+interface OrderAPI {
+
+    @UserOnly
+    @Operation(summary = "결제 및 예약 완료 처리")
+    @ApiResponses(ApiResponse(responseCode = "200"))
+    fun confirm(
+        @PathVariable("reservationId") reservationId: Long,
+        @RequestBody request: PaymentConfirmRequest
+    ): ResponseEntity<CommonApiResponse<Unit>>
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/exception/OrderErrorCode.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/exception/OrderErrorCode.kt
@ -0,0 +1,19 @@
+package com.sangdol.roomescape.order.exception
+
+import com.sangdol.common.types.exception.ErrorCode
+import com.sangdol.common.types.web.HttpStatus
+
+enum class OrderErrorCode(
+    override val httpStatus: HttpStatus,
+    override val errorCode: String,
+    override val message: String
+) : ErrorCode {
+    NOT_CONFIRMABLE(HttpStatus.CONFLICT, "B000", "예약을 확정할 수 없어요."),
+    BOOKING_ALREADY_COMPLETED(HttpStatus.CONFLICT, "B001", "이미 완료된 예약이에요."),
+    EXPIRED_RESERVATION(HttpStatus.CONFLICT, "B002", "결제 가능 시간이 지나 만료된 예약이에요. 처음부터 다시 시도해주세요."),
+    CANCELED_RESERVATION(HttpStatus.CONFLICT, "B003", "이미 취소된 예약이에요. 본인이 취소하지 않았다면 매장에 문의해주세요."),
+    PAST_SCHEDULE(HttpStatus.CONFLICT, "B004", "지난 일정은 예약할 수 없어요."),
+
+    BOOKING_UNEXPECTED_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, "B999", "예상치 못한 예외가 발생했어요. 잠시 후 다시 시도해주세요.")
+    ;
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/exception/OrderException.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/exception/OrderException.kt
@ -0,0 +1,16 @@
+package com.sangdol.roomescape.order.exception
+
+import com.sangdol.common.types.exception.ErrorCode
+import com.sangdol.common.types.exception.RoomescapeException
+
+class OrderException(
+    override val errorCode: ErrorCode,
+    override val message: String = errorCode.message,
+    var trial: Long = 0
+) : RoomescapeException(errorCode, message)
+
+class OrderErrorResponse(
+    val code: String,
+    val message: String,
+    val trial: Long
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/exception/OrderExceptionHandler.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/exception/OrderExceptionHandler.kt
@ -0,0 +1,45 @@
+package com.sangdol.roomescape.order.exception
+
+import com.sangdol.common.types.exception.ErrorCode
+import com.sangdol.common.types.web.HttpStatus
+import com.sangdol.common.web.support.log.WebLogMessageConverter
+import io.github.oshai.kotlinlogging.KLogger
+import io.github.oshai.kotlinlogging.KotlinLogging
+import jakarta.servlet.http.HttpServletRequest
+import org.springframework.http.ResponseEntity
+import org.springframework.web.bind.annotation.ExceptionHandler
+import org.springframework.web.bind.annotation.RestControllerAdvice
+
+private val log: KLogger = KotlinLogging.logger {}
+
+@RestControllerAdvice
+class OrderExceptionHandler(
+    private val messageConverter: WebLogMessageConverter
+) {
+    @ExceptionHandler(OrderException::class)
+    fun handleOrderException(
+        servletRequest: HttpServletRequest,
+        e: OrderException
+    ): ResponseEntity<OrderErrorResponse> {
+        val errorCode: ErrorCode = e.errorCode
+        val httpStatus: HttpStatus = errorCode.httpStatus
+        val errorResponse = OrderErrorResponse(
+            code = errorCode.errorCode,
+            message = if (httpStatus.isClientError()) e.message else errorCode.message,
+            trial = e.trial
+        )
+
+        log.info {
+            messageConverter.convertToErrorResponseMessage(
+                servletRequest = servletRequest,
+                httpStatus = httpStatus,
+                responseBody = errorResponse,
+                exception = if (errorCode.message == e.message) null else e
+            )
+        }
+
+        return ResponseEntity
+            .status(httpStatus.value())
+            .body(errorResponse)
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/infrastructure/persistence/PaymentAttemptEntity.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/infrastructure/persistence/PaymentAttemptEntity.kt
@ -0,0 +1,38 @@
+package com.sangdol.roomescape.order.infrastructure.persistence
+
+import com.sangdol.common.persistence.PersistableBaseEntity
+import jakarta.persistence.*
+import org.springframework.data.annotation.CreatedBy
+import org.springframework.data.annotation.CreatedDate
+import org.springframework.data.jpa.domain.support.AuditingEntityListener
+import java.time.Instant
+
+@Entity
+@EntityListeners(AuditingEntityListener::class)
+@Table(name = "payment_attempts")
+class PaymentAttemptEntity(
+    id: Long,
+
+    val reservationId: Long,
+
+    @Enumerated(value = EnumType.STRING)
+    val result: AttemptResult,
+
+    @Column(columnDefinition = "VARCHAR(50)")
+    val errorCode: String? = null,
+
+    @Column(columnDefinition = "TEXT")
+    val message: String? = null,
+) : PersistableBaseEntity(id) {
+    @Column(updatable = false)
+    @CreatedDate
+    lateinit var createdAt: Instant
+
+    @Column(updatable = false)
+    @CreatedBy
+    var createdBy: Long = 0L
+}
+
+enum class AttemptResult {
+    SUCCESS, FAILED
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/infrastructure/persistence/PaymentAttemptRepository.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/infrastructure/persistence/PaymentAttemptRepository.kt
@ -0,0 +1,26 @@
+package com.sangdol.roomescape.order.infrastructure.persistence
+
+import org.springframework.data.jpa.repository.JpaRepository
+import org.springframework.data.jpa.repository.Query
+
+interface PaymentAttemptRepository: JpaRepository<PaymentAttemptEntity, Long> {
+
+    fun countByReservationId(reservationId: Long): Long
+
+    @Query(
+        """
+        SELECT 
+            CASE 
+                WHEN COUNT(pa) > 0
+                THEN TRUE 
+            ELSE FALSE 
+            END 
+        FROM 
+            PaymentAttemptEntity pa
+        WHERE 
+            pa.reservationId = :reservationId
+            AND pa.result = com.sangdol.roomescape.order.infrastructure.persistence.AttemptResult.SUCCESS
+    """
+    )
+    fun isSuccessAttemptExists(reservationId: Long): Boolean
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/infrastructure/persistence/PostOrderTaskEntity.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/infrastructure/persistence/PostOrderTaskEntity.kt
@ -0,0 +1,16 @@
+package com.sangdol.roomescape.order.infrastructure.persistence
+
+import com.sangdol.common.persistence.PersistableBaseEntity
+import jakarta.persistence.Entity
+import jakarta.persistence.Table
+import java.time.Instant
+
+@Entity
+@Table(name = "post_order_tasks")
+class PostOrderTaskEntity(
+    id: Long,
+    val reservationId: Long,
+    val paymentKey: String,
+    val trial: Int,
+    val nextRetryAt: Instant
+) : PersistableBaseEntity(id)
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/infrastructure/persistence/PostOrderTaskRepository.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/infrastructure/persistence/PostOrderTaskRepository.kt
@ -0,0 +1,6 @@
+package com.sangdol.roomescape.order.infrastructure.persistence
+
+import org.springframework.data.jpa.repository.JpaRepository
+
+interface PostOrderTaskRepository : JpaRepository<PostOrderTaskEntity, Long> {
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/order/web/OrderController.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/order/web/OrderController.kt
@ -0,0 +1,25 @@
+package com.sangdol.roomescape.order.web
+
+import com.sangdol.common.types.web.CommonApiResponse
+import com.sangdol.roomescape.order.business.OrderService
+import com.sangdol.roomescape.order.docs.OrderAPI
+import com.sangdol.roomescape.payment.dto.PaymentConfirmRequest
+import org.springframework.http.ResponseEntity
+import org.springframework.web.bind.annotation.*
+
+@RestController
+@RequestMapping("/orders")
+class OrderController(
+    private val orderService: OrderService
+) : OrderAPI {
+
+    @PostMapping("/{reservationId}/confirm")
+    override fun confirm(
+        @PathVariable("reservationId") reservationId: Long,
+        @RequestBody request: PaymentConfirmRequest
+    ): ResponseEntity<CommonApiResponse<Unit>> {
+        orderService.confirm(reservationId, request)
+
+        return ResponseEntity.ok(CommonApiResponse())
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/business/PaymentService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/business/PaymentService.kt
@ -1,13 +1,14 @@
 package com.sangdol.roomescape.payment.business

 import com.sangdol.common.persistence.TransactionExecutionUtil
+import com.sangdol.roomescape.payment.business.domain.UserFacingPaymentErrorCode
+import com.sangdol.roomescape.payment.dto.*
+import com.sangdol.roomescape.payment.exception.ExternalPaymentException
 import com.sangdol.roomescape.payment.exception.PaymentErrorCode
 import com.sangdol.roomescape.payment.exception.PaymentException
-import com.sangdol.roomescape.payment.infrastructure.client.PaymentClientCancelResponse
-import com.sangdol.roomescape.payment.infrastructure.client.PaymentClientConfirmResponse
 import com.sangdol.roomescape.payment.infrastructure.client.TosspayClient
 import com.sangdol.roomescape.payment.infrastructure.persistence.*
-import com.sangdol.roomescape.payment.web.*
+import com.sangdol.roomescape.payment.mapper.toResponse
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
 import org.springframework.stereotype.Service
@ -24,33 +25,54 @@ class PaymentService(
    private val paymentWriter: PaymentWriter,
    private val transactionExecutionUtil: TransactionExecutionUtil,
 ) {
-    fun confirm(reservationId: Long, request: PaymentConfirmRequest): PaymentCreateResponse {
-        val clientConfirmResponse: PaymentClientConfirmResponse = paymentClient.confirm(
-            paymentKey = request.paymentKey,
-            orderId = request.orderId,
-            amount = request.amount,
-        )
+    fun requestConfirm(request: PaymentConfirmRequest): PaymentGatewayResponse {
+        log.info { "[requestConfirm] 결제 요청 시작: paymentKey=${request.paymentKey}" }
+        try {
+            return paymentClient.confirm(request.paymentKey, request.orderId, request.amount).also {
+                log.info { "[requestConfirm] 결제 완료: paymentKey=${request.paymentKey}" }
+            }
+        } catch (e: Exception) {
+            when(e) {
+                is ExternalPaymentException -> {
+                    val errorCode = if (e.httpStatusCode in 400..<500) {
+                        PaymentErrorCode.PAYMENT_CLIENT_ERROR
+                    } else {
+                        PaymentErrorCode.PAYMENT_PROVIDER_ERROR
+                    }

-        return transactionExecutionUtil.withNewTransaction(isReadOnly = false) {
-            val payment: PaymentEntity = paymentWriter.createPayment(
-                reservationId = reservationId,
-                orderId = request.orderId,
-                paymentType = request.paymentType,
-                paymentClientConfirmResponse = clientConfirmResponse
-            )
-            val detail: PaymentDetailEntity = paymentWriter.createDetail(clientConfirmResponse, payment.id)
+                    val message = if (UserFacingPaymentErrorCode.contains(e.errorCode)) {
+                        "${errorCode.message}(${e.message})"
+                    } else {
+                        errorCode.message
+                    }

-            PaymentCreateResponse(paymentId = payment.id, detailId = detail.id)
-        } ?: run {
-            log.warn { "[confirm] 결제 확정 중 예상치 못한 null 반환" }
-            throw PaymentException(PaymentErrorCode.PAYMENT_UNEXPECTED_ERROR)
+                    throw PaymentException(errorCode, message)
+                }
+                else -> {
+                    log.warn(e) { "[requestConfirm] 예상치 못한 결제 실패: paymentKey=${request.paymentKey}" }
+                    throw PaymentException(PaymentErrorCode.PAYMENT_UNEXPECTED_ERROR)
+                }
+            }
        }
    }

+    fun savePayment(
+        reservationId: Long,
+        paymentGatewayResponse: PaymentGatewayResponse
+    ): PaymentCreateResponse {
+        val payment: PaymentEntity = paymentWriter.createPayment(
+            reservationId = reservationId,
+            paymentGatewayResponse = paymentGatewayResponse
+        )
+        val detail: PaymentDetailEntity = paymentWriter.createDetail(paymentGatewayResponse, payment.id)
+
+        return PaymentCreateResponse(paymentId = payment.id, detailId = detail.id)
+    }
+
    fun cancel(userId: Long, request: PaymentCancelRequest) {
        val payment: PaymentEntity = findByReservationIdOrThrow(request.reservationId)

-        val clientCancelResponse: PaymentClientCancelResponse = paymentClient.cancel(
+        val clientCancelResponse: PaymentGatewayCancelResponse = paymentClient.cancel(
            paymentKey = payment.paymentKey,
            amount = payment.totalAmount,
            cancelReason = request.cancelReason
@ -69,16 +91,16 @@ class PaymentService(
    }

    @Transactional(readOnly = true)
-    fun findDetailByReservationId(reservationId: Long): PaymentWithDetailResponse? {
+    fun findDetailByReservationId(reservationId: Long): PaymentResponse? {
        log.info { "[findDetailByReservationId] 예약 결제 정보 조회 시작: reservationId=$reservationId" }

        val payment: PaymentEntity? = findByReservationIdOrNull(reservationId)
        val paymentDetail: PaymentDetailEntity? = payment?.let { findDetailByPaymentIdOrNull(it.id) }
        val cancelDetail: CanceledPaymentEntity? = payment?.let { findCancelByPaymentIdOrNull(it.id) }

-        return payment?.toDetailResponse(
-            detail = paymentDetail?.toPaymentDetailResponse(),
-            cancel = cancelDetail?.toCancelDetailResponse()
+        return payment?.toResponse(
+            detail = paymentDetail?.toResponse(),
+            cancel = cancelDetail?.toResponse()
        )
    }

--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/business/PaymentWriter.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/business/PaymentWriter.kt
@ -3,9 +3,13 @@ package com.sangdol.roomescape.payment.business
 import com.sangdol.common.persistence.IDGenerator
 import com.sangdol.roomescape.payment.exception.PaymentErrorCode
 import com.sangdol.roomescape.payment.exception.PaymentException
-import com.sangdol.roomescape.payment.infrastructure.client.*
-import com.sangdol.roomescape.payment.infrastructure.common.PaymentMethod
-import com.sangdol.roomescape.payment.infrastructure.common.PaymentType
+import com.sangdol.roomescape.payment.business.domain.PaymentMethod
+import com.sangdol.roomescape.payment.dto.PaymentGatewayCancelResponse
+import com.sangdol.roomescape.payment.dto.PaymentGatewayResponse
+import com.sangdol.roomescape.payment.mapper.toCardDetailEntity
+import com.sangdol.roomescape.payment.mapper.toEasypayPrepaidDetailEntity
+import com.sangdol.roomescape.payment.mapper.toEntity
+import com.sangdol.roomescape.payment.mapper.toTransferDetailEntity
 import com.sangdol.roomescape.payment.infrastructure.persistence.*
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
@ -24,35 +28,31 @@ class PaymentWriter(

    fun createPayment(
        reservationId: Long,
-        orderId: String,
-        paymentType: PaymentType,
-        paymentClientConfirmResponse: PaymentClientConfirmResponse
+        paymentGatewayResponse: PaymentGatewayResponse
    ): PaymentEntity {
-        log.info { "[PaymentWriterV2.createPayment] 결제 승인 및 결제 정보 저장 시작: reservationId=${reservationId}, paymentKey=${paymentClientConfirmResponse.paymentKey}" }
+        log.info { "[PaymentWriterV2.createPayment] 결제 승인 및 결제 정보 저장 시작: reservationId=${reservationId}, paymentKey=${paymentGatewayResponse.paymentKey}" }

-        return paymentClientConfirmResponse.toEntity(
-            id = idGenerator.create(), reservationId, orderId, paymentType
-        ).also {
+        return paymentGatewayResponse.toEntity(id = idGenerator.create(), reservationId = reservationId).also {
            paymentRepository.save(it)
            log.info { "[PaymentWriterV2.createPayment] 결제 승인 및 결제 정보 저장 완료: reservationId=${reservationId}, payment.id=${it.id}" }
        }
    }

    fun createDetail(
-        paymentResponse: PaymentClientConfirmResponse,
+        paymentGatewayResponse: PaymentGatewayResponse,
        paymentId: Long,
    ): PaymentDetailEntity {
-        val method: PaymentMethod = paymentResponse.method
+        val method: PaymentMethod = paymentGatewayResponse.method
        val id = idGenerator.create()

        if (method == PaymentMethod.TRANSFER) {
-            return paymentDetailRepository.save(paymentResponse.toTransferDetailEntity(id, paymentId))
+            return paymentDetailRepository.save(paymentGatewayResponse.toTransferDetailEntity(id, paymentId))
        }
-        if (method == PaymentMethod.EASY_PAY && paymentResponse.card == null) {
-            return paymentDetailRepository.save(paymentResponse.toEasypayPrepaidDetailEntity(id, paymentId))
+        if (method == PaymentMethod.EASY_PAY && paymentGatewayResponse.card == null) {
+            return paymentDetailRepository.save(paymentGatewayResponse.toEasypayPrepaidDetailEntity(id, paymentId))
        }
-        if (paymentResponse.card != null) {
-            return paymentDetailRepository.save(paymentResponse.toCardDetailEntity(id, paymentId))
+        if (paymentGatewayResponse.card != null) {
+            return paymentDetailRepository.save(paymentGatewayResponse.toCardDetailEntity(id, paymentId))
        }
        throw PaymentException(PaymentErrorCode.NOT_SUPPORTED_PAYMENT_TYPE)
    }
@ -61,7 +61,7 @@ class PaymentWriter(
        userId: Long,
        payment: PaymentEntity,
        requestedAt: Instant,
-        cancelResponse: PaymentClientCancelResponse
+        cancelResponse: PaymentGatewayCancelResponse
    ): CanceledPaymentEntity {
        log.debug { "[PaymentWriterV2.cancelPayment] 결제 취소 정보 저장 시작: payment.id=${payment.id}" }

--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/business/domain/PaymentDefinitions.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/business/domain/PaymentDefinitions.kt
@ -1,4 +1,4 @@
-package com.sangdol.roomescape.payment.infrastructure.common
+package com.sangdol.roomescape.payment.business.domain

 import com.fasterxml.jackson.annotation.JsonCreator
 import com.sangdol.roomescape.payment.exception.PaymentErrorCode
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/business/domain/UserFacingPaymentErrorCode.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/business/domain/UserFacingPaymentErrorCode.kt
@ -0,0 +1,42 @@
+package com.sangdol.roomescape.payment.business.domain
+
+enum class UserFacingPaymentErrorCode {
+    ALREADY_PROCESSED_PAYMENT,
+    EXCEED_MAX_CARD_INSTALLMENT_PLAN,
+    NOT_ALLOWED_POINT_USE,
+    INVALID_REJECT_CARD,
+    BELOW_MINIMUM_AMOUNT,
+    INVALID_CARD_EXPIRATION,
+    INVALID_STOPPED_CARD,
+    EXCEED_MAX_DAILY_PAYMENT_COUNT,
+    NOT_SUPPORTED_INSTALLMENT_PLAN_CARD_OR_MERCHANT,
+    INVALID_CARD_INSTALLMENT_PLAN,
+    NOT_SUPPORTED_MONTHLY_INSTALLMENT_PLAN,
+    EXCEED_MAX_PAYMENT_AMOUNT,
+    INVALID_CARD_LOST_OR_STOLEN,
+    RESTRICTED_TRANSFER_ACCOUNT,
+    INVALID_CARD_NUMBER,
+    EXCEED_MAX_ONE_DAY_WITHDRAW_AMOUNT,
+    EXCEED_MAX_ONE_TIME_WITHDRAW_AMOUNT,
+    CARD_PROCESSING_ERROR,
+    EXCEED_MAX_AMOUNT,
+    INVALID_ACCOUNT_INFO_RE_REGISTER,
+    NOT_AVAILABLE_PAYMENT,
+    EXCEED_MAX_MONTHLY_PAYMENT_AMOUNT,
+    REJECT_ACCOUNT_PAYMENT,
+    REJECT_CARD_PAYMENT,
+    REJECT_CARD_COMPANY,
+    FORBIDDEN_REQUEST,
+    EXCEED_MAX_AUTH_COUNT,
+    EXCEED_MAX_ONE_DAY_AMOUNT,
+    NOT_AVAILABLE_BANK,
+    INVALID_PASSWORD,
+    FDS_ERROR,
+    ;
+
+    companion object {
+        fun contains(code: String): Boolean {
+            return entries.any { it.name == code }
+        }
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/docs/PaymentAPI.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/docs/PaymentAPI.kt
@ -4,16 +4,15 @@ import com.sangdol.common.types.web.CommonApiResponse
 import com.sangdol.roomescape.auth.web.support.User
 import com.sangdol.roomescape.auth.web.support.UserOnly
 import com.sangdol.roomescape.common.types.CurrentUserContext
-import com.sangdol.roomescape.payment.web.PaymentCancelRequest
-import com.sangdol.roomescape.payment.web.PaymentConfirmRequest
-import com.sangdol.roomescape.payment.web.PaymentCreateResponse
+import com.sangdol.roomescape.payment.dto.PaymentGatewayResponse
+import com.sangdol.roomescape.payment.dto.PaymentCancelRequest
+import com.sangdol.roomescape.payment.dto.PaymentConfirmRequest
 import io.swagger.v3.oas.annotations.Operation
 import io.swagger.v3.oas.annotations.responses.ApiResponse
 import io.swagger.v3.oas.annotations.responses.ApiResponses
 import jakarta.validation.Valid
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.RequestBody
-import org.springframework.web.bind.annotation.RequestParam

 interface PaymentAPI {

@ -21,9 +20,8 @@ interface PaymentAPI {
    @Operation(summary = "결제 승인")
    @ApiResponses(ApiResponse(responseCode = "200", useReturnTypeSchema = true))
    fun confirmPayment(
-        @RequestParam(required = true) reservationId: Long,
        @Valid @RequestBody request: PaymentConfirmRequest
-    ): ResponseEntity<CommonApiResponse<PaymentCreateResponse>>
+    ): ResponseEntity<CommonApiResponse<PaymentGatewayResponse>>

    @Operation(summary = "결제 취소")
    @ApiResponses(ApiResponse(responseCode = "200", useReturnTypeSchema = true))
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/dto/PaymentClientDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/dto/PaymentClientDTO.kt
@ -0,0 +1,59 @@
+package com.sangdol.roomescape.payment.dto
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize
+import com.sangdol.roomescape.payment.business.domain.*
+import com.sangdol.roomescape.payment.infrastructure.client.CancelDetailDeserializer
+import java.time.OffsetDateTime
+
+data class PaymentGatewayResponse(
+    val paymentKey: String,
+    val orderId: String,
+    val type: PaymentType,
+    val status: PaymentStatus,
+    val totalAmount: Int,
+    val vat: Int,
+    val suppliedAmount: Int,
+    val method: PaymentMethod,
+    val card: CardDetailResponse?,
+    val easyPay: EasyPayDetailResponse?,
+    val transfer: TransferDetailResponse?,
+    val requestedAt: OffsetDateTime,
+    val approvedAt: OffsetDateTime,
+)
+
+data class PaymentGatewayCancelResponse(
+    val status: PaymentStatus,
+    @JsonDeserialize(using = CancelDetailDeserializer::class)
+    val cancels: CancelDetail,
+)
+
+data class CardDetailResponse(
+    val issuerCode: CardIssuerCode,
+    val number: String,
+    val amount: Int,
+    val cardType: CardType,
+    val ownerType: CardOwnerType,
+    val isInterestFree: Boolean,
+    val approveNo: String,
+    val installmentPlanMonths: Int
+)
+
+data class EasyPayDetailResponse(
+    val provider: EasyPayCompanyCode,
+    val amount: Int,
+    val discountAmount: Int,
+)
+
+data class TransferDetailResponse(
+    val bankCode: BankCode,
+    val settlementStatus: String,
+)
+
+data class CancelDetail(
+    val cancelAmount: Int,
+    val cardDiscountAmount: Int,
+    val transferDiscountAmount: Int,
+    val easyPayDiscountAmount: Int,
+    val canceledAt: OffsetDateTime,
+    val cancelReason: String
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/dto/PaymentFindDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/dto/PaymentFindDTO.kt
@ -0,0 +1,49 @@
+package com.sangdol.roomescape.payment.dto
+
+import com.sangdol.roomescape.payment.business.domain.PaymentStatus
+import java.time.Instant
+
+data class PaymentResponse(
+    val orderId: String,
+    val totalAmount: Int,
+    val method: String,
+    val status: PaymentStatus,
+    val requestedAt: Instant,
+    val approvedAt: Instant,
+    val detail: PaymentDetailResponse?,
+    val cancel: PaymentCancelDetailResponse?,
+)
+
+sealed class PaymentDetailResponse {
+    data class CardDetailResponse(
+        val type: String = "CARD",
+        val issuerCode: String,
+        val cardType: String,
+        val ownerType: String,
+        val cardNumber: String,
+        val amount: Int,
+        val approvalNumber: String,
+        val installmentPlanMonths: Int,
+        val easypayProviderName: String?,
+        val easypayDiscountAmount: Int?,
+    ) : PaymentDetailResponse()
+
+    data class BankTransferDetailResponse(
+        val type: String = "BANK_TRANSFER",
+        val bankName: String,
+    ) : PaymentDetailResponse()
+
+    data class EasyPayPrepaidDetailResponse(
+        val type: String = "EASYPAY_PREPAID",
+        val providerName: String,
+        val amount: Int,
+        val discountAmount: Int,
+    ) : PaymentDetailResponse()
+}
+
+data class PaymentCancelDetailResponse(
+    val cancellationRequestedAt: Instant,
+    val cancellationApprovedAt: Instant?,
+    val cancelReason: String,
+    val canceledBy: Long,
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/dto/PaymentWriteDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/dto/PaymentWriteDTO.kt
@ -0,0 +1,20 @@
+package com.sangdol.roomescape.payment.dto
+
+import java.time.Instant
+
+data class PaymentConfirmRequest(
+    val paymentKey: String,
+    val orderId: String,
+    val amount: Int,
+)
+
+data class PaymentCreateResponse(
+    val paymentId: Long,
+    val detailId: Long
+)
+
+data class PaymentCancelRequest(
+    val reservationId: Long,
+    val cancelReason: String,
+    val requestedAt: Instant = Instant.now()
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/exception/PaymentException.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/exception/PaymentException.kt
@ -6,3 +6,9 @@ class PaymentException(
    override val errorCode: PaymentErrorCode,
    override val message: String = errorCode.message
 ) : RoomescapeException(errorCode, message)
+
+class ExternalPaymentException(
+    val httpStatusCode: Int,
+    val errorCode: String,
+    override val message: String
+) : RuntimeException(message)
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/exception/PaymentExceptionHandler.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/exception/PaymentExceptionHandler.kt
@ -0,0 +1,40 @@
+package com.sangdol.roomescape.payment.exception
+
+import com.sangdol.common.types.web.CommonErrorResponse
+import com.sangdol.common.web.support.log.WebLogMessageConverter
+import io.github.oshai.kotlinlogging.KLogger
+import io.github.oshai.kotlinlogging.KotlinLogging
+import jakarta.servlet.http.HttpServletRequest
+import org.springframework.http.ResponseEntity
+import org.springframework.web.bind.annotation.ExceptionHandler
+import org.springframework.web.bind.annotation.RestControllerAdvice
+
+private val log: KLogger = KotlinLogging.logger {}
+
+@RestControllerAdvice
+class PaymentExceptionHandler(
+    private val logMessageConverter: WebLogMessageConverter
+) {
+    @ExceptionHandler(PaymentException::class)
+    fun handlePaymentException(
+        servletRequest: HttpServletRequest,
+        e: PaymentException
+    ): ResponseEntity<CommonErrorResponse> {
+        val errorCode = e.errorCode
+        val httpStatus = errorCode.httpStatus
+        val errorResponse = CommonErrorResponse(errorCode, e.message)
+
+        log.warn {
+            logMessageConverter.convertToErrorResponseMessage(
+                servletRequest = servletRequest,
+                httpStatus = httpStatus,
+                responseBody = errorResponse,
+                exception = if (e.message == errorCode.message) null else e
+            )
+        }
+
+        return ResponseEntity
+            .status(httpStatus.value())
+            .body(errorResponse)
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/infrastructure/client/TosspayCancelDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/infrastructure/client/TosspayCancelDTO.kt
@ -1,67 +0,0 @@
-package com.sangdol.roomescape.payment.infrastructure.client
-
-import com.fasterxml.jackson.core.JsonParser
-import com.fasterxml.jackson.databind.DeserializationContext
-import com.fasterxml.jackson.databind.JsonNode
-import com.fasterxml.jackson.databind.annotation.JsonDeserialize
-import com.sangdol.roomescape.payment.infrastructure.common.PaymentStatus
-import com.sangdol.roomescape.payment.infrastructure.persistence.CanceledPaymentEntity
-import java.time.Instant
-import java.time.OffsetDateTime
-
-data class PaymentClientCancelResponse(
-    val status: PaymentStatus,
-    @JsonDeserialize(using = CancelDetailDeserializer::class)
-    val cancels: CancelDetail,
-)
-
-data class CancelDetail(
-    val cancelAmount: Int,
-    val cardDiscountAmount: Int,
-    val transferDiscountAmount: Int,
-    val easyPayDiscountAmount: Int,
-    val canceledAt: OffsetDateTime,
-    val cancelReason: String
-)
-
-fun CancelDetail.toEntity(
-    id: Long,
-    paymentId: Long,
-    canceledBy: Long,
-    cancelRequestedAt: Instant
-) = CanceledPaymentEntity(
-    id = id,
-    canceledAt = this.canceledAt.toInstant(),
-    requestedAt = cancelRequestedAt,
-    paymentId = paymentId,
-    canceledBy = canceledBy,
-    cancelReason = this.cancelReason,
-    cancelAmount = this.cancelAmount,
-    cardDiscountAmount = this.cardDiscountAmount,
-    transferDiscountAmount = this.transferDiscountAmount,
-    easypayDiscountAmount = this.easyPayDiscountAmount
-)
-
-class CancelDetailDeserializer : com.fasterxml.jackson.databind.JsonDeserializer<CancelDetail>() {
-    override fun deserialize(
-        p: JsonParser,
-        ctxt: DeserializationContext
-    ): CancelDetail? {
-        val node: JsonNode = p.codec.readTree(p) ?: return null
-
-        val targetNode = when {
-            node.isArray && !node.isEmpty -> node[0]
-            node.isObject -> node
-            else -> return null
-        }
-
-        return CancelDetail(
-            cancelAmount = targetNode.get("cancelAmount").asInt(),
-            cardDiscountAmount = targetNode.get("cardDiscountAmount").asInt(),
-            transferDiscountAmount = targetNode.get("transferDiscountAmount").asInt(),
-            easyPayDiscountAmount = targetNode.get("easyPayDiscountAmount").asInt(),
-            canceledAt = OffsetDateTime.parse(targetNode.get("canceledAt").asText()),
-            cancelReason = targetNode.get("cancelReason").asText()
-        )
-    }
-}
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/infrastructure/client/TosspayClient.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/infrastructure/client/TosspayClient.kt
@ -1,6 +1,9 @@
 package com.sangdol.roomescape.payment.infrastructure.client

 import com.fasterxml.jackson.databind.ObjectMapper
+import com.sangdol.roomescape.payment.dto.PaymentGatewayCancelResponse
+import com.sangdol.roomescape.payment.dto.PaymentGatewayResponse
+import com.sangdol.roomescape.payment.exception.ExternalPaymentException
 import com.sangdol.roomescape.payment.exception.PaymentErrorCode
 import com.sangdol.roomescape.payment.exception.PaymentException
 import io.github.oshai.kotlinlogging.KLogger
@ -28,7 +31,7 @@ class TosspayClient(
        paymentKey: String,
        orderId: String,
        amount: Int,
-    ): PaymentClientConfirmResponse {
+    ): PaymentGatewayResponse {
        val startTime = System.currentTimeMillis()
        log.info { "[TosspayClient.confirm] 결제 승인 요청: paymentKey=$paymentKey, orderId=$orderId, amount=$amount" }

@ -42,7 +45,7 @@ class TosspayClient(
        paymentKey: String,
        amount: Int,
        cancelReason: String
-    ): PaymentClientCancelResponse {
+    ): PaymentGatewayCancelResponse {
        val startTime = System.currentTimeMillis()
        log.info { "[TosspayClient.cancel] 결제 취소 요청: paymentKey=$paymentKey, amount=$amount, cancelReason=$cancelReason" }

@ -62,7 +65,7 @@ private class ConfirmClient(

    private val errorHandler: TosspayErrorHandler = TosspayErrorHandler(objectMapper)

-    fun request(paymentKey: String, orderId: String, amount: Int): PaymentClientConfirmResponse {
+    fun request(paymentKey: String, orderId: String, amount: Int): PaymentGatewayResponse {
        val response = client.post()
            .uri(CONFIRM_URI)
            .contentType(MediaType.APPLICATION_JSON)
@ -83,7 +86,7 @@ private class ConfirmClient(

        log.debug { "[TosspayClient.confirm] 응답 수신: json = $response" }

-        return objectMapper.readValue(response, PaymentClientConfirmResponse::class.java)
+        return objectMapper.readValue(response, PaymentGatewayResponse::class.java)
    }
 }

@ -101,7 +104,7 @@ private class CancelClient(
        paymentKey: String,
        amount: Int,
        cancelReason: String
-    ): PaymentClientCancelResponse {
+    ): PaymentGatewayCancelResponse {
        val response = client.post()
            .uri(CANCEL_URI, paymentKey)
            .body(
@ -119,7 +122,7 @@ private class CancelClient(
            }

        log.debug { "[TosspayClient.cancel] 응답 수신: json = $response" }
-        return objectMapper.readValue(response, PaymentClientCancelResponse::class.java)
+        return objectMapper.readValue(response, PaymentGatewayCancelResponse::class.java)
    }
 }

@ -138,9 +141,20 @@ private class TosspayErrorHandler(
        response: ClientHttpResponse
    ): Nothing {
        val requestType: String = paymentRequestType(url)
-        log.warn { "[TosspayClient] $requestType 요청 실패: response: ${parseResponse(response)}" }
+        val errorResponse: TosspayErrorResponse = parseResponse(response)
+        val status = response.statusCode

-        throw PaymentException(paymentErrorCode(response.statusCode))
+        if (status.is5xxServerError) {
+            log.warn { "[TosspayClient] $requestType 요청 실패: response: $errorResponse" }
+        } else {
+            log.info { "[TosspayClient] $requestType 요청 실패: response: $errorResponse" }
+        }
+
+        throw ExternalPaymentException(
+            httpStatusCode = status.value(),
+            errorCode = errorResponse.code,
+            message = errorResponse.message
+        )
    }

    private fun paymentRequestType(url: URI): String {
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/infrastructure/client/TosspayResponseDeserializer.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/infrastructure/client/TosspayResponseDeserializer.kt
@ -0,0 +1,32 @@
+package com.sangdol.roomescape.payment.infrastructure.client
+
+import com.fasterxml.jackson.core.JsonParser
+import com.fasterxml.jackson.databind.DeserializationContext
+import com.fasterxml.jackson.databind.JsonDeserializer
+import com.fasterxml.jackson.databind.JsonNode
+import com.sangdol.roomescape.payment.dto.CancelDetail
+import java.time.OffsetDateTime
+
+class CancelDetailDeserializer : JsonDeserializer<CancelDetail>() {
+    override fun deserialize(
+        p: JsonParser,
+        ctxt: DeserializationContext
+    ): CancelDetail? {
+        val node: JsonNode = p.codec.readTree(p) ?: return null
+
+        val targetNode = when {
+            node.isArray && !node.isEmpty -> node[0]
+            node.isObject -> node
+            else -> return null
+        }
+
+        return CancelDetail(
+            cancelAmount = targetNode.get("cancelAmount").asInt(),
+            cardDiscountAmount = targetNode.get("cardDiscountAmount").asInt(),
+            transferDiscountAmount = targetNode.get("transferDiscountAmount").asInt(),
+            easyPayDiscountAmount = targetNode.get("easyPayDiscountAmount").asInt(),
+            canceledAt = OffsetDateTime.parse(targetNode.get("canceledAt").asText()),
+            cancelReason = targetNode.get("cancelReason").asText()
+        )
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/infrastructure/persistence/PaymentDetailEntity.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/infrastructure/persistence/PaymentDetailEntity.kt
@ -1,7 +1,11 @@
 package com.sangdol.roomescape.payment.infrastructure.persistence

 import com.sangdol.common.persistence.PersistableBaseEntity
-import com.sangdol.roomescape.payment.infrastructure.common.*
+import com.sangdol.roomescape.payment.business.domain.BankCode
+import com.sangdol.roomescape.payment.business.domain.CardIssuerCode
+import com.sangdol.roomescape.payment.business.domain.CardOwnerType
+import com.sangdol.roomescape.payment.business.domain.CardType
+import com.sangdol.roomescape.payment.business.domain.EasyPayCompanyCode
 import jakarta.persistence.*

@Entity
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/infrastructure/persistence/PaymentEntity.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/infrastructure/persistence/PaymentEntity.kt
@ -1,9 +1,9 @@
 package com.sangdol.roomescape.payment.infrastructure.persistence

 import com.sangdol.common.persistence.PersistableBaseEntity
-import com.sangdol.roomescape.payment.infrastructure.common.PaymentMethod
-import com.sangdol.roomescape.payment.infrastructure.common.PaymentStatus
-import com.sangdol.roomescape.payment.infrastructure.common.PaymentType
+import com.sangdol.roomescape.payment.business.domain.PaymentMethod
+import com.sangdol.roomescape.payment.business.domain.PaymentStatus
+import com.sangdol.roomescape.payment.business.domain.PaymentType
 import jakarta.persistence.Entity
 import jakarta.persistence.EnumType
 import jakarta.persistence.Enumerated
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/mapper/PaymentClientDTOMappingExtensions.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/mapper/PaymentClientDTOMappingExtensions.kt
@ -1,58 +1,29 @@
-package com.sangdol.roomescape.payment.infrastructure.client
+package com.sangdol.roomescape.payment.mapper

+import com.sangdol.roomescape.payment.dto.CancelDetail
+import com.sangdol.roomescape.payment.dto.PaymentGatewayResponse
 import com.sangdol.roomescape.payment.exception.PaymentErrorCode
 import com.sangdol.roomescape.payment.exception.PaymentException
-import com.sangdol.roomescape.payment.infrastructure.common.*
-import com.sangdol.roomescape.payment.infrastructure.persistence.PaymentBankTransferDetailEntity
-import com.sangdol.roomescape.payment.infrastructure.persistence.PaymentCardDetailEntity
-import com.sangdol.roomescape.payment.infrastructure.persistence.PaymentEasypayPrepaidDetailEntity
-import com.sangdol.roomescape.payment.infrastructure.persistence.PaymentEntity
-import java.time.OffsetDateTime
+import com.sangdol.roomescape.payment.infrastructure.persistence.*
+import java.time.Instant

-data class PaymentClientConfirmResponse(
-    val paymentKey: String,
-    val status: PaymentStatus,
-    val totalAmount: Int,
-    val vat: Int,
-    val suppliedAmount: Int,
-    val method: PaymentMethod,
-    val card: CardDetail?,
-    val easyPay: EasyPayDetail?,
-    val transfer: TransferDetail?,
-    val requestedAt: OffsetDateTime,
-    val approvedAt: OffsetDateTime,
-)
-
-fun PaymentClientConfirmResponse.toEntity(
+fun PaymentGatewayResponse.toEntity(
    id: Long,
    reservationId: Long,
-    orderId: String,
-    paymentType: PaymentType
 ) = PaymentEntity(
    id = id,
    reservationId = reservationId,
    paymentKey = this.paymentKey,
-    orderId = orderId,
+    orderId = this.orderId,
    totalAmount = this.totalAmount,
    requestedAt = this.requestedAt.toInstant(),
    approvedAt = this.approvedAt.toInstant(),
-    type = paymentType,
+    type = this.type,
    method = this.method,
    status = this.status,
 )

-data class CardDetail(
-    val issuerCode: CardIssuerCode,
-    val number: String,
-    val amount: Int,
-    val cardType: CardType,
-    val ownerType: CardOwnerType,
-    val isInterestFree: Boolean,
-    val approveNo: String,
-    val installmentPlanMonths: Int
-)
-
-fun PaymentClientConfirmResponse.toCardDetailEntity(id: Long, paymentId: Long): PaymentCardDetailEntity {
+fun PaymentGatewayResponse.toCardDetailEntity(id: Long, paymentId: Long): PaymentCardDetailEntity {
    val cardDetail = this.card ?: throw PaymentException(PaymentErrorCode.PAYMENT_UNEXPECTED_ERROR)

    return PaymentCardDetailEntity(
@ -73,13 +44,7 @@ fun PaymentClientConfirmResponse.toCardDetailEntity(id: Long, paymentId: Long):
    )
 }

-data class EasyPayDetail(
-    val provider: EasyPayCompanyCode,
-    val amount: Int,
-    val discountAmount: Int,
-)
-
-fun PaymentClientConfirmResponse.toEasypayPrepaidDetailEntity(
+fun PaymentGatewayResponse.toEasypayPrepaidDetailEntity(
    id: Long,
    paymentId: Long
 ): PaymentEasypayPrepaidDetailEntity {
@ -96,12 +61,7 @@ fun PaymentClientConfirmResponse.toEasypayPrepaidDetailEntity(
    )
 }

-data class TransferDetail(
-    val bankCode: BankCode,
-    val settlementStatus: String,
-)
-
-fun PaymentClientConfirmResponse.toTransferDetailEntity(
+fun PaymentGatewayResponse.toTransferDetailEntity(
    id: Long,
    paymentId: Long
 ): PaymentBankTransferDetailEntity {
@ -116,3 +76,21 @@ fun PaymentClientConfirmResponse.toTransferDetailEntity(
        settlementStatus = transferDetail.settlementStatus
    )
 }
+
+fun CancelDetail.toEntity(
+    id: Long,
+    paymentId: Long,
+    canceledBy: Long,
+    cancelRequestedAt: Instant
+) = CanceledPaymentEntity(
+    id = id,
+    canceledAt = this.canceledAt.toInstant(),
+    requestedAt = cancelRequestedAt,
+    paymentId = paymentId,
+    canceledBy = canceledBy,
+    cancelReason = this.cancelReason,
+    cancelAmount = this.cancelAmount,
+    cardDiscountAmount = this.cardDiscountAmount,
+    transferDiscountAmount = this.transferDiscountAmount,
+    easypayDiscountAmount = this.easyPayDiscountAmount
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/mapper/PaymentFindDTOMappingExtensions.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/mapper/PaymentFindDTOMappingExtensions.kt
@ -0,0 +1,70 @@
+package com.sangdol.roomescape.payment.mapper
+
+import com.sangdol.roomescape.payment.dto.PaymentCancelDetailResponse
+import com.sangdol.roomescape.payment.dto.PaymentDetailResponse
+import com.sangdol.roomescape.payment.dto.PaymentResponse
+import com.sangdol.roomescape.payment.exception.PaymentErrorCode
+import com.sangdol.roomescape.payment.exception.PaymentException
+import com.sangdol.roomescape.payment.infrastructure.persistence.*
+
+fun PaymentEntity.toResponse(
+    detail: PaymentDetailResponse?,
+    cancel: PaymentCancelDetailResponse?
+): PaymentResponse {
+    return PaymentResponse(
+        orderId = this.orderId,
+        totalAmount = this.totalAmount,
+        method = this.method.koreanName,
+        status = this.status,
+        requestedAt = this.requestedAt,
+        approvedAt = this.approvedAt,
+        detail = detail,
+        cancel = cancel
+    )
+}
+
+fun PaymentDetailEntity.toResponse(): PaymentDetailResponse {
+    return when (this) {
+        is PaymentCardDetailEntity -> this.toResponse()
+        is PaymentBankTransferDetailEntity -> this.toResponse()
+        is PaymentEasypayPrepaidDetailEntity -> this.toResponse()
+        else -> throw PaymentException(PaymentErrorCode.NOT_SUPPORTED_PAYMENT_TYPE)
+    }
+}
+
+fun PaymentCardDetailEntity.toResponse(): PaymentDetailResponse.CardDetailResponse {
+    return PaymentDetailResponse.CardDetailResponse(
+        issuerCode = this.issuerCode.koreanName,
+        cardType = this.cardType.koreanName,
+        ownerType = this.ownerType.koreanName,
+        cardNumber = this.cardNumber,
+        amount = this.amount,
+        approvalNumber = this.approvalNumber,
+        installmentPlanMonths = this.installmentPlanMonths,
+        easypayProviderName = this.easypayProviderCode?.koreanName,
+        easypayDiscountAmount = this.easypayDiscountAmount
+    )
+}
+
+fun PaymentBankTransferDetailEntity.toResponse(): PaymentDetailResponse.BankTransferDetailResponse {
+    return PaymentDetailResponse.BankTransferDetailResponse(
+        bankName = this.bankCode.koreanName
+    )
+}
+
+fun PaymentEasypayPrepaidDetailEntity.toResponse(): PaymentDetailResponse.EasyPayPrepaidDetailResponse {
+    return PaymentDetailResponse.EasyPayPrepaidDetailResponse(
+        providerName = this.easypayProviderCode.koreanName,
+        amount = this.amount,
+        discountAmount = this.discountAmount
+    )
+}
+
+fun CanceledPaymentEntity.toResponse(): PaymentCancelDetailResponse {
+    return PaymentCancelDetailResponse(
+        cancellationRequestedAt = this.requestedAt,
+        cancellationApprovedAt = this.canceledAt,
+        cancelReason = this.cancelReason,
+        canceledBy = this.canceledBy
+    )
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/web/PaymentController.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/web/PaymentController.kt
@ -5,6 +5,9 @@ import com.sangdol.roomescape.auth.web.support.User
 import com.sangdol.roomescape.common.types.CurrentUserContext
 import com.sangdol.roomescape.payment.business.PaymentService
 import com.sangdol.roomescape.payment.docs.PaymentAPI
+import com.sangdol.roomescape.payment.dto.PaymentCancelRequest
+import com.sangdol.roomescape.payment.dto.PaymentConfirmRequest
+import com.sangdol.roomescape.payment.dto.PaymentGatewayResponse
 import jakarta.validation.Valid
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.*
@ -15,12 +18,11 @@ class PaymentController(
    private val paymentService: PaymentService
 ) : PaymentAPI {

-    @PostMapping
+    @PostMapping("/confirm")
    override fun confirmPayment(
-        @RequestParam(required = true) reservationId: Long,
        @Valid @RequestBody request: PaymentConfirmRequest
-    ): ResponseEntity<CommonApiResponse<PaymentCreateResponse>> {
-        val response = paymentService.confirm(reservationId, request)
+    ): ResponseEntity<CommonApiResponse<PaymentGatewayResponse>> {
+        val response = paymentService.requestConfirm(request)

        return ResponseEntity.ok(CommonApiResponse(response))
    }
--- a/service/src/main/kotlin/com/sangdol/roomescape/payment/web/PaymentDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/payment/web/PaymentDTO.kt
@ -1,135 +0,0 @@
-package com.sangdol.roomescape.payment.web
-
-import com.sangdol.roomescape.payment.exception.PaymentErrorCode
-import com.sangdol.roomescape.payment.exception.PaymentException
-import com.sangdol.roomescape.payment.infrastructure.common.PaymentStatus
-import com.sangdol.roomescape.payment.infrastructure.common.PaymentType
-import com.sangdol.roomescape.payment.infrastructure.persistence.*
-import com.sangdol.roomescape.payment.web.PaymentDetailResponse.*
-import java.time.Instant
-
-data class PaymentConfirmRequest(
-    val paymentKey: String,
-    val orderId: String,
-    val amount: Int,
-    val paymentType: PaymentType
-)
-
-data class PaymentCreateResponse(
-    val paymentId: Long,
-    val detailId: Long
-)
-
-data class PaymentCancelRequest(
-    val reservationId: Long,
-    val cancelReason: String,
-    val requestedAt: Instant = Instant.now()
-)
-
-data class PaymentWithDetailResponse(
-    val orderId: String,
-    val totalAmount: Int,
-    val method: String,
-    val status: PaymentStatus,
-    val requestedAt: Instant,
-    val approvedAt: Instant,
-    val detail: PaymentDetailResponse?,
-    val cancel: PaymentCancelDetailResponse?,
-)
-
-fun PaymentEntity.toDetailResponse(
-    detail: PaymentDetailResponse?,
-    cancel: PaymentCancelDetailResponse?
-): PaymentWithDetailResponse {
-    return PaymentWithDetailResponse(
-        orderId = this.orderId,
-        totalAmount = this.totalAmount,
-        method = this.method.koreanName,
-        status = this.status,
-        requestedAt = this.requestedAt,
-        approvedAt = this.approvedAt,
-        detail = detail,
-        cancel = cancel
-    )
-}
-
-sealed class PaymentDetailResponse {
-
-    data class CardDetailResponse(
-        val type: String = "CARD",
-        val issuerCode: String,
-        val cardType: String,
-        val ownerType: String,
-        val cardNumber: String,
-        val amount: Int,
-        val approvalNumber: String,
-        val installmentPlanMonths: Int,
-        val easypayProviderName: String?,
-        val easypayDiscountAmount: Int?,
-    ) : PaymentDetailResponse()
-
-    data class BankTransferDetailResponse(
-        val type: String = "BANK_TRANSFER",
-        val bankName: String,
-    ) : PaymentDetailResponse()
-
-    data class EasyPayPrepaidDetailResponse(
-        val type: String = "EASYPAY_PREPAID",
-        val providerName: String,
-        val amount: Int,
-        val discountAmount: Int,
-    ) : PaymentDetailResponse()
-}
-
-fun PaymentDetailEntity.toPaymentDetailResponse(): PaymentDetailResponse {
-    return when (this) {
-        is PaymentCardDetailEntity -> this.toCardDetailResponse()
-        is PaymentBankTransferDetailEntity -> this.toBankTransferDetailResponse()
-        is PaymentEasypayPrepaidDetailEntity -> this.toEasyPayPrepaidDetailResponse()
-        else -> throw PaymentException(PaymentErrorCode.NOT_SUPPORTED_PAYMENT_TYPE)
-    }
-}
-
-fun PaymentCardDetailEntity.toCardDetailResponse(): CardDetailResponse {
-    return CardDetailResponse(
-        issuerCode = this.issuerCode.koreanName,
-        cardType = this.cardType.koreanName,
-        ownerType = this.ownerType.koreanName,
-        cardNumber = this.cardNumber,
-        amount = this.amount,
-        approvalNumber = this.approvalNumber,
-        installmentPlanMonths = this.installmentPlanMonths,
-        easypayProviderName = this.easypayProviderCode?.koreanName,
-        easypayDiscountAmount = this.easypayDiscountAmount
-    )
-}
-
-fun PaymentBankTransferDetailEntity.toBankTransferDetailResponse(): BankTransferDetailResponse {
-    return BankTransferDetailResponse(
-        bankName = this.bankCode.koreanName
-    )
-}
-
-fun PaymentEasypayPrepaidDetailEntity.toEasyPayPrepaidDetailResponse(): EasyPayPrepaidDetailResponse {
-    return EasyPayPrepaidDetailResponse(
-        providerName = this.easypayProviderCode.koreanName,
-        amount = this.amount,
-        discountAmount = this.discountAmount
-    )
-}
-
-data class PaymentCancelDetailResponse(
-    val cancellationRequestedAt: Instant,
-    val cancellationApprovedAt: Instant?,
-    val cancelReason: String,
-    val canceledBy: Long,
-)
-
-fun CanceledPaymentEntity.toCancelDetailResponse(): PaymentCancelDetailResponse {
-    return PaymentCancelDetailResponse(
-        cancellationRequestedAt = this.requestedAt,
-        cancellationApprovedAt = this.canceledAt,
-        cancelReason = this.cancelReason,
-        canceledBy = this.canceledBy
-    )
-}
--- a/service/src/main/kotlin/com/sangdol/roomescape/region/business/RegionService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/region/business/RegionService.kt
@ -1,9 +1,9 @@
 package com.sangdol.roomescape.region.business

+import com.sangdol.roomescape.region.dto.*
 import com.sangdol.roomescape.region.exception.RegionErrorCode
 import com.sangdol.roomescape.region.exception.RegionException
 import com.sangdol.roomescape.region.infrastructure.persistence.RegionRepository
-import com.sangdol.roomescape.region.web.*
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
 import org.springframework.stereotype.Service
--- a/service/src/main/kotlin/com/sangdol/roomescape/region/docs/RegionAPI.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/region/docs/RegionAPI.kt
@ -2,9 +2,9 @@ package com.sangdol.roomescape.region.docs

 import com.sangdol.common.types.web.CommonApiResponse
 import com.sangdol.roomescape.auth.web.support.Public
-import com.sangdol.roomescape.region.web.RegionCodeResponse
-import com.sangdol.roomescape.region.web.SidoListResponse
-import com.sangdol.roomescape.region.web.SigunguListResponse
+import com.sangdol.roomescape.region.dto.RegionCodeResponse
+import com.sangdol.roomescape.region.dto.SidoListResponse
+import com.sangdol.roomescape.region.dto.SigunguListResponse
 import io.swagger.v3.oas.annotations.Operation
 import io.swagger.v3.oas.annotations.responses.ApiResponse
 import io.swagger.v3.oas.annotations.responses.ApiResponses
--- a/service/src/main/kotlin/com/sangdol/roomescape/region/dto/RegionDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/region/dto/RegionDTO.kt
@ -1,4 +1,4 @@
-package com.sangdol.roomescape.region.web
+package com.sangdol.roomescape.region.dto

 data class SidoResponse(
    val code: String,
--- a/service/src/main/kotlin/com/sangdol/roomescape/region/web/RegionController.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/region/web/RegionController.kt
@ -3,6 +3,9 @@ package com.sangdol.roomescape.region.web
 import com.sangdol.common.types.web.CommonApiResponse
 import com.sangdol.roomescape.region.business.RegionService
 import com.sangdol.roomescape.region.docs.RegionAPI
+import com.sangdol.roomescape.region.dto.RegionCodeResponse
+import com.sangdol.roomescape.region.dto.SidoListResponse
+import com.sangdol.roomescape.region.dto.SigunguListResponse
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.GetMapping
 import org.springframework.web.bind.annotation.RequestMapping
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/business/ReservationService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/business/ReservationService.kt
@ -3,17 +3,22 @@ package com.sangdol.roomescape.reservation.business
 import com.sangdol.common.persistence.IDGenerator
 import com.sangdol.roomescape.common.types.CurrentUserContext
 import com.sangdol.roomescape.payment.business.PaymentService
-import com.sangdol.roomescape.payment.web.PaymentWithDetailResponse
+import com.sangdol.roomescape.payment.dto.PaymentResponse
+import com.sangdol.roomescape.reservation.dto.*
 import com.sangdol.roomescape.reservation.exception.ReservationErrorCode
 import com.sangdol.roomescape.reservation.exception.ReservationException
 import com.sangdol.roomescape.reservation.infrastructure.persistence.*
-import com.sangdol.roomescape.reservation.web.*
+import com.sangdol.roomescape.reservation.mapper.toAdditionalResponse
+import com.sangdol.roomescape.reservation.mapper.toEntity
+import com.sangdol.roomescape.reservation.mapper.toOverviewResponse
+import com.sangdol.roomescape.reservation.mapper.toStateResponse
 import com.sangdol.roomescape.schedule.business.ScheduleService
+import com.sangdol.roomescape.schedule.dto.ScheduleStateResponse
+import com.sangdol.roomescape.schedule.dto.ScheduleWithThemeAndStoreResponse
 import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus
-import com.sangdol.roomescape.schedule.web.ScheduleOverviewResponse
 import com.sangdol.roomescape.theme.business.ThemeService
 import com.sangdol.roomescape.user.business.UserService
-import com.sangdol.roomescape.user.web.UserContactResponse
+import com.sangdol.roomescape.user.dto.UserContactResponse
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
 import org.springframework.data.repository.findByIdOrNull
@ -42,11 +47,18 @@ class ReservationService(
    ): PendingReservationCreateResponse {
        log.info { "[createPendingReservation] Pending 예약 생성 시작: schedule=${request.scheduleId}" }

-        validateCanCreate(request)
+        run {
+            val schedule: ScheduleStateResponse = scheduleService.findStateWithLock(request.scheduleId)
+            val theme = themeService.findInfoById(schedule.themeId)

-        val reservation: ReservationEntity = request.toEntity(id = idGenerator.create(), userId = user.id)
+            reservationValidator.validateCanCreate(schedule, theme, request)
+        }

-        return PendingReservationCreateResponse(reservationRepository.save(reservation).id)
+        val reservation: ReservationEntity = request.toEntity(id = idGenerator.create(), userId = user.id).also {
+            reservationRepository.save(it)
+        }
+
+        return PendingReservationCreateResponse(reservation.id)
            .also { log.info { "[createPendingReservation] Pending 예약 생성 완료: reservationId=${it}, schedule=${request.scheduleId}" } }
    }

@ -96,22 +108,30 @@ class ReservationService(
        )

        return ReservationOverviewListResponse(reservations.map {
-            val schedule: ScheduleOverviewResponse = scheduleService.findScheduleOverviewById(it.scheduleId)
-            it.toOverviewResponse(schedule)
+            val response: ScheduleWithThemeAndStoreResponse = scheduleService.findWithThemeAndStore(it.scheduleId)
+            val schedule = response.schedule
+
+            it.toOverviewResponse(
+                scheduleDate = schedule.date,
+                scheduleStartFrom = schedule.startFrom,
+                scheduleEndAt = schedule.endAt,
+                storeName = response.theme.name,
+                themeName = response.store.name
+            )
        }).also {
            log.info { "[findSummaryByMemberId] ${it.reservations.size}개의 예약 조회 완료: userId=${user.id}" }
        }
    }

    @Transactional(readOnly = true)
-    fun findDetailById(id: Long): ReservationDetailResponse {
+    fun findDetailById(id: Long): ReservationAdditionalResponse {
        log.info { "[findDetailById] 예약 상세 조회 시작: reservationId=${id}" }

        val reservation: ReservationEntity = findOrThrow(id)
        val user: UserContactResponse = userService.findContactById(reservation.userId)
-        val paymentDetail: PaymentWithDetailResponse? = paymentService.findDetailByReservationId(id)
+        val paymentDetail: PaymentResponse? = paymentService.findDetailByReservationId(id)

-        return reservation.toReservationDetailRetrieveResponse(
+        return reservation.toAdditionalResponse(
            user = user,
            payment = paymentDetail
        ).also {
@ -119,6 +139,30 @@ class ReservationService(
        }
    }

+    @Transactional(readOnly = true)
+    fun findStatusWithLock(id: Long): ReservationStateResponse {
+        log.info { "[findStatusWithLock] 예약 LOCK + 상태 조회 시작: reservationId=${id}" }
+
+        return reservationRepository.findByIdForUpdate(id)?.let {
+            log.info { "[findStatusWithLock] 예약 LOCK + 상태 조회 완료: reservationId=${id}" }
+            it.toStateResponse()
+        } ?: run {
+            log.warn { "[findStatusWithLock] 예약 LOCK + 상태 조회 실패: reservationId=${id}" }
+            throw ReservationException(ReservationErrorCode.RESERVATION_NOT_FOUND)
+        }
+    }
+
+    @Transactional
+    fun markInProgress(reservationId: Long) {
+        log.info { "[markInProgress] 예약 상태 ${ReservationStatus.PAYMENT_IN_PROGRESS} 변경 시작." }
+
+        findOrThrow(reservationId).apply {
+            this.status = ReservationStatus.PAYMENT_IN_PROGRESS
+        }.also {
+            log.info { "[markInProgress] 예약 상태 ${ReservationStatus.PAYMENT_IN_PROGRESS} 변경 완료" }
+        }
+    }
+
    private fun findOrThrow(id: Long): ReservationEntity {
        log.info { "[findOrThrow] 예약 조회 시작: reservationId=${id}" }

@ -149,14 +193,6 @@ class ReservationService(
            status = CanceledReservationStatus.COMPLETED
        ).also {
            canceledReservationRepository.save(it)
-
        }
    }
-
-    private fun validateCanCreate(request: PendingReservationCreateRequest) {
-        val schedule = scheduleService.findSummaryWithLock(request.scheduleId)
-        val theme = themeService.findInfoById(schedule.themeId)
-
-        reservationValidator.validateCanCreate(schedule, theme, request)
-    }
 }
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/business/ReservationValidator.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/business/ReservationValidator.kt
@ -1,14 +1,18 @@
 package com.sangdol.roomescape.reservation.business

+import com.sangdol.common.utils.KoreaDateTime
+import com.sangdol.common.utils.toKoreaDateTime
 import com.sangdol.roomescape.reservation.exception.ReservationErrorCode
 import com.sangdol.roomescape.reservation.exception.ReservationException
-import com.sangdol.roomescape.reservation.web.PendingReservationCreateRequest
+import com.sangdol.roomescape.reservation.dto.PendingReservationCreateRequest
+import com.sangdol.roomescape.schedule.dto.ScheduleStateResponse
 import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus
-import com.sangdol.roomescape.schedule.web.ScheduleSummaryResponse
-import com.sangdol.roomescape.theme.web.ThemeInfoResponse
+import com.sangdol.roomescape.theme.dto.ThemeInfoResponse
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
 import org.springframework.stereotype.Component
+import java.time.Instant
+import java.time.LocalDateTime

 private val log: KLogger = KotlinLogging.logger {}

@ -16,22 +20,35 @@ private val log: KLogger = KotlinLogging.logger {}
 class ReservationValidator {

    fun validateCanCreate(
-        schedule: ScheduleSummaryResponse,
+        schedule: ScheduleStateResponse,
        theme: ThemeInfoResponse,
        request: PendingReservationCreateRequest
    ) {
+        validateSchedule(schedule)
+        validateReservationInfo(theme, request)
+    }
+    private fun validateSchedule(schedule: ScheduleStateResponse) {
        if (schedule.status != ScheduleStatus.HOLD) {
-            log.warn { "[ReservationValidator.validateCanCreate] ${schedule.status}로의 일정 상태 변경에 따른 실패" }
+            log.info { "[validateCanCreate] ${schedule.status}로의 일정 상태 변경에 따른 실패" }
            throw ReservationException(ReservationErrorCode.EXPIRED_HELD_SCHEDULE)
        }

+        val scheduleDateTime = LocalDateTime.of(schedule.date, schedule.startFrom)
+        val nowDateTime = KoreaDateTime.now()
+        if (scheduleDateTime.isBefore(nowDateTime)) {
+            log.info { "[validateCanCreate] 과거 시간인 일정으로 인한 실패: scheduleDateTime=${scheduleDateTime}(KST), now=${nowDateTime}" }
+            throw ReservationException(ReservationErrorCode.PAST_SCHEDULE)
+        }
+    }
+
+    private fun validateReservationInfo(theme: ThemeInfoResponse, request: PendingReservationCreateRequest) {
        if (theme.minParticipants > request.participantCount) {
-            log.info { "[ReservationValidator.validateCanCreate] 최소 인원 미달로 인한 예약 실패: minParticipants=${theme.minParticipants}, participantCount=${request.participantCount}" }
+            log.info { "[validateCanCreate] 최소 인원 미달로 인한 예약 실패: minParticipants=${theme.minParticipants}, participantCount=${request.participantCount}" }
            throw ReservationException(ReservationErrorCode.INVALID_PARTICIPANT_COUNT)
        }

        if (theme.maxParticipants < request.participantCount) {
-            log.info { "[ReservationValidator.validateCanCreate] 최대 인원 초과로 인한 예약 실패: minParticipants=${theme.minParticipants}, participantCount=${request.participantCount}" }
+            log.info { "[validateCanCreate] 최대 인원 초과로 인한 예약 실패: minParticipants=${theme.minParticipants}, participantCount=${request.participantCount}" }
            throw ReservationException(ReservationErrorCode.INVALID_PARTICIPANT_COUNT)
        }
    }
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/business/scheduler/IncompletedReservationScheduler.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/business/scheduler/IncompletedReservationScheduler.kt
@ -24,20 +24,28 @@ class IncompletedReservationScheduler(
    @Scheduled(initialDelay = 1, fixedRate = 1, timeUnit = TimeUnit.MINUTES)
    @Transactional
    fun processExpiredHoldSchedule() {
-        log.info { "[IncompletedReservationScheduler] 만료 시간이 지난 ${ScheduleStatus.HOLD} 상태의 일정 재활성화 시작" }
+        log.info { "[processExpiredHoldSchedule] 만료 시간이 지난 ${ScheduleStatus.HOLD} 상태의 일정 재활성화 시작" }

-        scheduleRepository.releaseExpiredHolds(Instant.now()).also {
-            log.info { "[IncompletedReservationScheduler] ${it}개의 일정 재활성화 완료" }
+        val targets: List<Long> = scheduleRepository.findAllExpiredHeldSchedules(Instant.now()).also {
+            log.info { "[processExpiredHoldSchedule] ${it.size} 개의 일정 조회 완료" }
+        }
+
+        scheduleRepository.releaseHeldSchedules(targets).also {
+            log.info { "[processExpiredHoldSchedule] ${it}개의 일정 재활성화 완료" }
        }
    }

    @Scheduled(initialDelay = 1, fixedRate = 1, timeUnit = TimeUnit.MINUTES)
    @Transactional
    fun processExpiredReservation() {
-        log.info { "[IncompletedReservationScheduler] 결제되지 않은 예약 만료 처리 시작 " }
+        log.info { "[processExpiredReservation] 결제되지 않은 예약 만료 처리 시작" }

-        reservationRepository.expirePendingReservations(Instant.now()).also {
-            log.info { "[IncompletedReservationScheduler] ${it}개의 예약 및 일정 처리 완료" }
+        val targets: List<Long> = reservationRepository.findAllExpiredReservation().also {
+            log.info { "[processExpiredReservation] ${it.size} 개의 예약 조회 완료" }
+        }
+
+        reservationRepository.expirePendingReservations(Instant.now(), targets).also {
+            log.info { "[processExpiredReservation] ${it}개의 예약 및 일정 처리 완료" }
        }
    }
 }
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/docs/ReservationAPI.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/docs/ReservationAPI.kt
@ -4,7 +4,11 @@ import com.sangdol.common.types.web.CommonApiResponse
 import com.sangdol.roomescape.auth.web.support.User
 import com.sangdol.roomescape.auth.web.support.UserOnly
 import com.sangdol.roomescape.common.types.CurrentUserContext
-import com.sangdol.roomescape.reservation.web.*
+import com.sangdol.roomescape.reservation.dto.PendingReservationCreateRequest
+import com.sangdol.roomescape.reservation.dto.PendingReservationCreateResponse
+import com.sangdol.roomescape.reservation.dto.ReservationCancelRequest
+import com.sangdol.roomescape.reservation.dto.ReservationAdditionalResponse
+import com.sangdol.roomescape.reservation.dto.ReservationOverviewListResponse
 import io.swagger.v3.oas.annotations.Operation
 import io.swagger.v3.oas.annotations.responses.ApiResponse
 import io.swagger.v3.oas.annotations.responses.ApiResponses
@ -47,5 +51,5 @@ interface ReservationAPI {
    @ApiResponses(ApiResponse(responseCode = "200", useReturnTypeSchema = true))
    fun findDetailById(
        @PathVariable("id") id: Long
-    ): ResponseEntity<CommonApiResponse<ReservationDetailResponse>>
+    ): ResponseEntity<CommonApiResponse<ReservationAdditionalResponse>>
 }
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/dto/ReservationFindDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/dto/ReservationFindDTO.kt
@ -0,0 +1,44 @@
+package com.sangdol.roomescape.reservation.dto
+
+import com.sangdol.roomescape.payment.dto.PaymentResponse
+import com.sangdol.roomescape.reservation.infrastructure.persistence.ReservationStatus
+import com.sangdol.roomescape.user.dto.UserContactResponse
+import java.time.Instant
+import java.time.LocalDate
+import java.time.LocalTime
+
+data class ReservationOverviewResponse(
+    val id: Long,
+    val storeName: String,
+    val themeName: String,
+    val date: LocalDate,
+    val startFrom: LocalTime,
+    val endAt: LocalTime,
+    val status: ReservationStatus
+)
+
+data class ReservationAdditionalResponse(
+    val id: Long,
+    val reserver: ReserverInfo,
+    val user: UserContactResponse,
+    val applicationDateTime: Instant,
+    val payment: PaymentResponse?,
+)
+
+data class ReserverInfo(
+    val name: String,
+    val contact: String,
+    val participantCount: Short,
+    val requirement: String
+)
+
+data class ReservationOverviewListResponse(
+    val reservations: List<ReservationOverviewResponse>
+)
+
+data class ReservationStateResponse(
+    val id: Long,
+    val scheduleId: Long,
+    val status: ReservationStatus,
+    val createdAt: Instant
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/dto/ReservationWriteDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/dto/ReservationWriteDTO.kt
@ -0,0 +1,21 @@
+package com.sangdol.roomescape.reservation.dto
+
+import jakarta.validation.constraints.NotEmpty
+
+data class ReservationCancelRequest(
+    val cancelReason: String
+)
+
+data class PendingReservationCreateRequest(
+    val scheduleId: Long,
+    @NotEmpty
+    val reserverName: String,
+    @NotEmpty
+    val reserverContact: String,
+    val participantCount: Short,
+    val requirement: String
+)
+
+data class PendingReservationCreateResponse(
+    val id: Long
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/exception/ReservationErrorCode.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/exception/ReservationErrorCode.kt
@ -12,6 +12,7 @@ enum class ReservationErrorCode(
    NO_PERMISSION_TO_CANCEL_RESERVATION(HttpStatus.FORBIDDEN, "R002", "예약을 취소할 수 있는 권한이 없어요."),
    INVALID_SEARCH_DATE_RANGE(HttpStatus.BAD_REQUEST, "R003", "종료 날짜는 시작 날짜 이후여야 해요."),
    EXPIRED_HELD_SCHEDULE(HttpStatus.CONFLICT, "R004", "예약 정보 입력 시간을 초과했어요. 일정 선택 후 다시 시도해주세요."),
-    INVALID_PARTICIPANT_COUNT(HttpStatus.BAD_REQUEST, "R005", "참여 가능 인원 수를 확인해주세요.")
+    INVALID_PARTICIPANT_COUNT(HttpStatus.BAD_REQUEST, "R005", "참여 가능 인원 수를 확인해주세요."),
+    PAST_SCHEDULE(HttpStatus.BAD_REQUEST, "R006", "지난 일정은 예약할 수 없어요.")
    ;
 }
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/infrastructure/persistence/ReservationEntity.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/infrastructure/persistence/ReservationEntity.kt
@ -31,5 +31,5 @@ class ReservationEntity(
 }

 enum class ReservationStatus {
-    PENDING, CONFIRMED, CANCELED, FAILED, EXPIRED
+    PENDING, PAYMENT_IN_PROGRESS, CONFIRMED, CANCELED, EXPIRED;
 }
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/infrastructure/persistence/ReservationRepository.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/infrastructure/persistence/ReservationRepository.kt
@ -1,6 +1,8 @@
 package com.sangdol.roomescape.reservation.infrastructure.persistence

+import jakarta.persistence.LockModeType
 import org.springframework.data.jpa.repository.JpaRepository
+import org.springframework.data.jpa.repository.Lock
 import org.springframework.data.jpa.repository.Modifying
 import org.springframework.data.jpa.repository.Query
 import org.springframework.data.repository.query.Param
@ -10,6 +12,24 @@ interface ReservationRepository : JpaRepository<ReservationEntity, Long> {

    fun findAllByUserIdAndStatusIsIn(userId: Long, statuses: List<ReservationStatus>): List<ReservationEntity>

+    @Lock(LockModeType.PESSIMISTIC_WRITE)
+    @Query("SELECT r FROM ReservationEntity r WHERE r._id = :id")
+    fun findByIdForUpdate(@Param("id") id: Long): ReservationEntity?
+
+
+    @Query("""
+        SELECT 
+            r.id
+        FROM 
+            reservation r
+        JOIN 
+            schedule s ON r.schedule_id = s.id AND s.status = 'HOLD'
+        WHERE 
+            r.status = 'PENDING' AND r.created_at <= DATE_SUB(CURRENT_TIMESTAMP, INTERVAL 5 MINUTE)
+        FOR UPDATE SKIP LOCKED
+    """, nativeQuery = true)
+    fun findAllExpiredReservation(): List<Long>
+
    @Modifying
    @Query(
        """
@ -23,8 +43,8 @@ interface ReservationRepository : JpaRepository<ReservationEntity, Long> {
            s.status = 'AVAILABLE',
            s.hold_expired_at = NULL
        WHERE
-            r.status = 'PENDING' AND r.created_at <= DATE_SUB(CURRENT_TIMESTAMP, INTERVAL 5 MINUTE)
+            r.id IN :reservationIds
    """, nativeQuery = true
    )
-    fun expirePendingReservations(@Param("now") now: Instant): Int
+    fun expirePendingReservations(@Param("now") now: Instant, @Param("reservationIds") reservationIds: List<Long>): Int
 }
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/mapper/ReservationMappingExtensions.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/mapper/ReservationMappingExtensions.kt
@ -0,0 +1,67 @@
+package com.sangdol.roomescape.reservation.mapper
+
+import com.sangdol.roomescape.payment.dto.PaymentResponse
+import com.sangdol.roomescape.reservation.dto.PendingReservationCreateRequest
+import com.sangdol.roomescape.reservation.dto.ReservationAdditionalResponse
+import com.sangdol.roomescape.reservation.dto.ReservationOverviewResponse
+import com.sangdol.roomescape.reservation.dto.ReservationStateResponse
+import com.sangdol.roomescape.reservation.dto.ReserverInfo
+import com.sangdol.roomescape.reservation.infrastructure.persistence.ReservationEntity
+import com.sangdol.roomescape.reservation.infrastructure.persistence.ReservationStatus
+import com.sangdol.roomescape.user.dto.UserContactResponse
+import java.time.LocalDate
+import java.time.LocalTime
+
+fun PendingReservationCreateRequest.toEntity(id: Long, userId: Long) = ReservationEntity(
+    id = id,
+    userId = userId,
+    scheduleId = this.scheduleId,
+    reserverName = this.reserverName,
+    reserverContact = this.reserverContact,
+    participantCount = this.participantCount,
+    requirement = this.requirement,
+    status = ReservationStatus.PENDING
+)
+
+fun ReservationEntity.toOverviewResponse(
+    scheduleDate: LocalDate,
+    scheduleStartFrom: LocalTime,
+    scheduleEndAt: LocalTime,
+    storeName: String,
+    themeName: String
+) = ReservationOverviewResponse(
+    id = this.id,
+    storeName = storeName,
+    themeName = themeName,
+    date = scheduleDate,
+    startFrom = scheduleStartFrom,
+    endAt = scheduleEndAt,
+    status = this.status
+)
+
+fun ReservationEntity.toAdditionalResponse(
+    user: UserContactResponse,
+    payment: PaymentResponse?,
+): ReservationAdditionalResponse {
+    return ReservationAdditionalResponse(
+        id = this.id,
+        reserver = this.toReserverInfo(),
+        user = user,
+        applicationDateTime = this.createdAt,
+        payment = payment,
+    )
+}
+
+private fun ReservationEntity.toReserverInfo() = ReserverInfo(
+    name = this.reserverName,
+    contact = this.reserverContact,
+    participantCount = this.participantCount,
+    requirement = this.requirement
+)
+
+fun ReservationEntity.toStateResponse() = ReservationStateResponse(
+    id = this.id,
+    scheduleId = this.scheduleId,
+    status = this.status,
+    createdAt = this.createdAt
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/web/ReservationController.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/web/ReservationController.kt
@ -5,6 +5,11 @@ import com.sangdol.roomescape.auth.web.support.User
 import com.sangdol.roomescape.common.types.CurrentUserContext
 import com.sangdol.roomescape.reservation.business.ReservationService
 import com.sangdol.roomescape.reservation.docs.ReservationAPI
+import com.sangdol.roomescape.reservation.dto.PendingReservationCreateRequest
+import com.sangdol.roomescape.reservation.dto.PendingReservationCreateResponse
+import com.sangdol.roomescape.reservation.dto.ReservationCancelRequest
+import com.sangdol.roomescape.reservation.dto.ReservationAdditionalResponse
+import com.sangdol.roomescape.reservation.dto.ReservationOverviewListResponse
 import jakarta.validation.Valid
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.*
@ -56,7 +61,7 @@ class ReservationController(
    @GetMapping("/{id}/detail")
    override fun findDetailById(
        @PathVariable("id") id: Long
-    ): ResponseEntity<CommonApiResponse<ReservationDetailResponse>> {
+    ): ResponseEntity<CommonApiResponse<ReservationAdditionalResponse>> {
        val response = reservationService.findDetailById(id)

        return ResponseEntity.ok(CommonApiResponse(response))
--- a/service/src/main/kotlin/com/sangdol/roomescape/reservation/web/ReservationDto.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/reservation/web/ReservationDto.kt
@ -1,101 +0,0 @@
-package com.sangdol.roomescape.reservation.web
-
-import com.sangdol.roomescape.payment.web.PaymentWithDetailResponse
-import com.sangdol.roomescape.reservation.infrastructure.persistence.ReservationEntity
-import com.sangdol.roomescape.reservation.infrastructure.persistence.ReservationStatus
-import com.sangdol.roomescape.schedule.web.ScheduleOverviewResponse
-import com.sangdol.roomescape.user.web.UserContactResponse
-import jakarta.validation.constraints.NotEmpty
-import java.time.Instant
-import java.time.LocalDate
-import java.time.LocalTime
-
-data class PendingReservationCreateRequest(
-    val scheduleId: Long,
-    @NotEmpty
-    val reserverName: String,
-    @NotEmpty
-    val reserverContact: String,
-    val participantCount: Short,
-    val requirement: String
-)
-
-fun PendingReservationCreateRequest.toEntity(id: Long, userId: Long) = ReservationEntity(
-    id = id,
-    userId = userId,
-    scheduleId = this.scheduleId,
-    reserverName = this.reserverName,
-    reserverContact = this.reserverContact,
-    participantCount = this.participantCount,
-    requirement = this.requirement,
-    status = ReservationStatus.PENDING
-)
-
-data class PendingReservationCreateResponse(
-    val id: Long
-)
-
-data class ReservationOverviewResponse(
-    val id: Long,
-    val storeName: String,
-    val themeName: String,
-    val date: LocalDate,
-    val startFrom: LocalTime,
-    val endAt: LocalTime,
-    val status: ReservationStatus
-)
-
-fun ReservationEntity.toOverviewResponse(
-    schedule: ScheduleOverviewResponse
-) = ReservationOverviewResponse(
-    id = this.id,
-    storeName = schedule.storeName,
-    themeName = schedule.themeName,
-    date = schedule.date,
-    startFrom = schedule.startFrom,
-    endAt = schedule.endAt,
-    status = this.status
-)
-
-data class ReservationOverviewListResponse(
-    val reservations: List<ReservationOverviewResponse>
-)
-
-data class ReserverInfo(
-    val name: String,
-    val contact: String,
-    val participantCount: Short,
-    val requirement: String
-)
-
-fun ReservationEntity.toReserverInfo() = ReserverInfo(
-    name = this.reserverName,
-    contact = this.reserverContact,
-    participantCount = this.participantCount,
-    requirement = this.requirement
-)
-
-data class ReservationDetailResponse(
-    val id: Long,
-    val reserver: ReserverInfo,
-    val user: UserContactResponse,
-    val applicationDateTime: Instant,
-    val payment: PaymentWithDetailResponse?,
-)
-
-fun ReservationEntity.toReservationDetailRetrieveResponse(
-    user: UserContactResponse,
-    payment: PaymentWithDetailResponse?,
-): ReservationDetailResponse {
-    return ReservationDetailResponse(
-        id = this.id,
-        reserver = this.toReserverInfo(),
-        user = user,
-        applicationDateTime = this.createdAt,
-        payment = payment,
-    )
-}
-
-data class ReservationCancelRequest(
-    val cancelReason: String
-)
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/business/AdminScheduleService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/business/AdminScheduleService.kt
@ -0,0 +1,128 @@
+package com.sangdol.roomescape.schedule.business
+
+import com.sangdol.common.persistence.IDGenerator
+import com.sangdol.common.utils.KoreaDate
+import com.sangdol.roomescape.admin.business.AdminService
+import com.sangdol.roomescape.common.types.AuditingInfo
+import com.sangdol.roomescape.common.types.Auditor
+import com.sangdol.roomescape.schedule.business.domain.ScheduleOverview
+import com.sangdol.roomescape.schedule.dto.AdminScheduleSummaryListResponse
+import com.sangdol.roomescape.schedule.dto.ScheduleCreateRequest
+import com.sangdol.roomescape.schedule.dto.ScheduleCreateResponse
+import com.sangdol.roomescape.schedule.dto.ScheduleUpdateRequest
+import com.sangdol.roomescape.schedule.exception.ScheduleErrorCode
+import com.sangdol.roomescape.schedule.exception.ScheduleException
+import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleEntity
+import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleEntityFactory
+import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleRepository
+import com.sangdol.roomescape.schedule.mapper.toAdminSummaryResponse
+import io.github.oshai.kotlinlogging.KLogger
+import io.github.oshai.kotlinlogging.KotlinLogging
+import org.springframework.data.repository.findByIdOrNull
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+import java.time.LocalDate
+
+private val log: KLogger = KotlinLogging.logger {}
+
+@Service
+class AdminScheduleService(
+    private val scheduleRepository: ScheduleRepository,
+    private val scheduleValidator: ScheduleValidator,
+    private val idGenerator: IDGenerator,
+    private val adminService: AdminService
+) {
+    @Transactional(readOnly = true)
+    fun searchSchedules(storeId: Long, date: LocalDate?, themeId: Long?): AdminScheduleSummaryListResponse {
+        log.info { "[searchSchedules] 일정 검색 시작: storeId=$storeId, date=$date, themeId=$themeId" }
+
+        val searchDate = date ?: KoreaDate.today()
+
+        val schedules: List<ScheduleOverview> =
+            scheduleRepository.findStoreSchedulesWithThemeByDate(storeId, searchDate)
+                .filter { (themeId == null) || (it.themeId == themeId) }
+                .sortedBy { it.time }
+
+        return schedules.toAdminSummaryResponse()
+            .also {
+                log.info { "[searchSchedules] ${it.schedules.size} 개의 일정 조회 완료" }
+            }
+    }
+
+    @Transactional(readOnly = true)
+    fun findScheduleAudit(id: Long): AuditingInfo {
+        log.info { "[findDetail] 일정 감사 정보 조회 시작: id=$id" }
+
+        val schedule: ScheduleEntity = findOrThrow(id)
+
+        val createdBy: Auditor = adminService.findOperatorOrUnknown(schedule.createdBy)
+        val updatedBy: Auditor = adminService.findOperatorOrUnknown(schedule.updatedBy)
+
+        return AuditingInfo(schedule.createdAt, createdBy, schedule.updatedAt, updatedBy)
+            .also { log.info { "[findDetail] 일정 감사 정보 조회 완료: id=$id" } }
+    }
+
+    @Transactional
+    fun createSchedule(storeId: Long, request: ScheduleCreateRequest): ScheduleCreateResponse {
+        log.info { "[createSchedule] 일정 생성 시작: storeId=${storeId}, date=${request.date}, time=${request.time}, themeId=${request.themeId}" }
+
+        scheduleValidator.validateCanCreate(storeId, request)
+
+        val schedule = ScheduleEntityFactory.create(
+            id = idGenerator.create(),
+            date = request.date,
+            time = request.time,
+            storeId = storeId,
+            themeId = request.themeId
+        ).also {
+            scheduleRepository.save(it)
+        }
+
+        return ScheduleCreateResponse(schedule.id)
+            .also {
+                log.info { "[createSchedule] 일정 생성 완료: id=${it.id}" }
+            }
+    }
+
+    @Transactional
+    fun updateSchedule(id: Long, request: ScheduleUpdateRequest) {
+        log.info { "[updateSchedule] 일정 수정 시작: id=$id, request=${request}" }
+
+        if (request.isAllParamsNull()) {
+            log.info { "[updateSchedule] 일정 변경 사항 없음: id=$id" }
+            return
+        }
+
+        val schedule: ScheduleEntity = findOrThrow(id).also {
+            scheduleValidator.validateCanUpdate(it, request)
+        }
+
+        schedule.modifyIfNotNull(request.time, request.status).also {
+            log.info { "[updateSchedule] 일정 수정 완료: id=$id, request=${request}" }
+        }
+    }
+
+    @Transactional
+    fun deleteSchedule(id: Long) {
+        log.info { "[deleteSchedule] 일정 삭제 시작: id=$id" }
+
+        val schedule: ScheduleEntity = findOrThrow(id).also {
+            scheduleValidator.validateCanDelete(it)
+        }
+
+        scheduleRepository.delete(schedule).also {
+            log.info { "[deleteSchedule] 일정 삭제 완료: id=$id" }
+        }
+    }
+
+    private fun findOrThrow(id: Long): ScheduleEntity {
+        log.info { "[findOrThrow] 일정 조회 시작: id=$id" }
+
+        return scheduleRepository.findByIdOrNull(id)
+            ?.also { log.info { "[findOrThrow] 일정 조회 완료: id=$id" } }
+            ?: run {
+                log.warn { "[findOrThrow] 일정 조회 실패. id=$id" }
+                throw ScheduleException(ScheduleErrorCode.SCHEDULE_NOT_FOUND)
+            }
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/business/ScheduleService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/business/ScheduleService.kt
@ -1,22 +1,21 @@
 package com.sangdol.roomescape.schedule.business

-import com.sangdol.common.persistence.IDGenerator
 import com.sangdol.common.utils.KoreaDate
 import com.sangdol.common.utils.KoreaTime
-import com.sangdol.roomescape.admin.business.AdminService
-import com.sangdol.roomescape.common.types.AuditingInfo
-import com.sangdol.roomescape.common.types.Auditor
 import com.sangdol.roomescape.schedule.business.domain.ScheduleOverview
+import com.sangdol.roomescape.schedule.dto.ScheduleStateResponse
+import com.sangdol.roomescape.schedule.dto.ScheduleWithThemeAndStoreResponse
+import com.sangdol.roomescape.schedule.dto.ScheduleWithThemeListResponse
 import com.sangdol.roomescape.schedule.exception.ScheduleErrorCode
 import com.sangdol.roomescape.schedule.exception.ScheduleException
 import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleEntity
-import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleEntityFactory
 import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleRepository
 import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus
-import com.sangdol.roomescape.schedule.web.*
+import com.sangdol.roomescape.schedule.mapper.toResponseWithTheme
+import com.sangdol.roomescape.schedule.mapper.toResponseWithThemeAndStore
+import com.sangdol.roomescape.schedule.mapper.toStateResponse
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
-import org.springframework.data.repository.findByIdOrNull
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
 import java.time.LocalDate
@ -24,25 +23,11 @@ import java.time.LocalTime

 private val log: KLogger = KotlinLogging.logger {}

-/**
- * Structure:
- * - Public: 모두가 접근 가능
- * - User: 회원(로그인된 사용자)가 사용 가능
- * - All-Admin: 모든 관리자가 사용 가능
- * - Store-Admin: 매장 관리자만 사용 가능
- * - Other-Service: 다른 서비스에서 호출하는 메서드
- * - Common: 공통 메서드
- */
@Service
 class ScheduleService(
    private val scheduleRepository: ScheduleRepository,
-    private val scheduleValidator: ScheduleValidator,
-    private val idGenerator: IDGenerator,
-    private val adminService: AdminService
+    private val scheduleValidator: ScheduleValidator
 ) {
-    // ========================================
-    // Public (인증 불필요)
-    // ========================================
    @Transactional(readOnly = true)
    fun getStoreScheduleByDate(storeId: Long, date: LocalDate): ScheduleWithThemeListResponse {
        log.info { "[getStoreScheduleByDate] 매장 일정 조회: storeId=${storeId}, date=$date" }
@ -59,127 +44,31 @@ class ScheduleService(
            scheduleRepository.findStoreSchedulesWithThemeByDate(storeId, date)
                .filter { it.date.isAfter(currentDate) || it.time.isAfter(currentTime) }

-        return schedules.toResponse()
+        return schedules.toResponseWithTheme()
            .also {
                log.info { "[getStoreScheduleByDate] storeId=${storeId}, date=$date 인 ${it.schedules.size}개 일정 조회 완료" }
            }
    }

-    // ========================================
-    // User (회원 로그인 필요)
-    // ========================================
    @Transactional
    fun holdSchedule(id: Long) {
        log.info { "[holdSchedule] 일정 Holding 시작: id=$id" }
-        val result: Int = scheduleRepository.changeStatus(
-            id = id,
-            currentStatus = ScheduleStatus.AVAILABLE,
+
+        val schedule = findForUpdateOrThrow(id).also {
+            scheduleValidator.validateCanHold(it)
+        }
+
+        scheduleRepository.changeStatus(
+            id = schedule.id,
+            currentStatus = schedule.status,
            changeStatus = ScheduleStatus.HOLD
        ).also {
-            log.info { "[holdSchedule] $it 개의 row 변경 완료" }
+            log.info { "[holdSchedule] 일정 Holding 완료: id=$id" }
        }
-
-        if (result == 0) {
-            throw ScheduleException(ScheduleErrorCode.SCHEDULE_NOT_AVAILABLE)
-        }
-
-        log.info { "[holdSchedule] 일정 Holding 완료: id=$id" }
-    }
-
-    // ========================================
-    // All-Admin (본사, 매장 모두 사용가능)
-    // ========================================
-    @Transactional(readOnly = true)
-    fun searchSchedules(storeId: Long, date: LocalDate?, themeId: Long?): AdminScheduleSummaryListResponse {
-        log.info { "[searchSchedules] 일정 검색 시작: storeId=$storeId, date=$date, themeId=$themeId" }
-
-        val searchDate = date ?: KoreaDate.today()
-
-        val schedules: List<ScheduleOverview> =
-            scheduleRepository.findStoreSchedulesWithThemeByDate(storeId, searchDate)
-                .filter { (themeId == null) || (it.themeId == themeId) }
-                .sortedBy { it.time }
-
-        return schedules.toAdminSummaryListResponse()
-            .also {
-                log.info { "[searchSchedules] ${it.schedules.size} 개의 일정 조회 완료" }
-            }
    }

    @Transactional(readOnly = true)
-    fun findScheduleAudit(id: Long): AuditingInfo {
-        log.info { "[findDetail] 일정 감사 정보 조회 시작: id=$id" }
-
-        val schedule: ScheduleEntity = findOrThrow(id)
-
-        val createdBy: Auditor = adminService.findOperatorOrUnknown(schedule.createdBy)
-        val updatedBy: Auditor = adminService.findOperatorOrUnknown(schedule.updatedBy)
-
-        return AuditingInfo(schedule.createdAt, createdBy, schedule.updatedAt, updatedBy)
-            .also { log.info { "[findDetail] 일정 감사 정보 조회 완료: id=$id" } }
-    }
-
-    // ========================================
-    // Store-Admin (매장 관리자 로그인 필요)
-    // ========================================
-    @Transactional
-    fun createSchedule(storeId: Long, request: ScheduleCreateRequest): ScheduleCreateResponse {
-        log.info { "[createSchedule] 일정 생성 시작: storeId=${storeId}, date=${request.date}, time=${request.time}, themeId=${request.themeId}" }
-
-        scheduleValidator.validateCanCreate(storeId, request)
-
-        val schedule = ScheduleEntityFactory.create(
-            id = idGenerator.create(),
-            date = request.date,
-            time = request.time,
-            storeId = storeId,
-            themeId = request.themeId
-        ).also {
-            scheduleRepository.save(it)
-        }
-
-        return ScheduleCreateResponse(schedule.id)
-            .also {
-                log.info { "[createSchedule] 일정 생성 완료: id=${it.id}" }
-            }
-    }
-
-    @Transactional
-    fun updateSchedule(id: Long, request: ScheduleUpdateRequest) {
-        log.info { "[updateSchedule] 일정 수정 시작: id=$id, request=${request}" }
-
-        if (request.isAllParamsNull()) {
-            log.info { "[updateSchedule] 일정 변경 사항 없음: id=$id" }
-            return
-        }
-
-        val schedule: ScheduleEntity = findOrThrow(id).also {
-            scheduleValidator.validateCanUpdate(it, request)
-        }
-
-        schedule.modifyIfNotNull(request.time, request.status).also {
-            log.info { "[updateSchedule] 일정 수정 완료: id=$id, request=${request}" }
-        }
-    }
-
-    @Transactional
-    fun deleteSchedule(id: Long) {
-        log.info { "[deleteSchedule] 일정 삭제 시작: id=$id" }
-
-        val schedule: ScheduleEntity = findOrThrow(id).also {
-            scheduleValidator.validateCanDelete(it)
-        }
-
-        scheduleRepository.delete(schedule).also {
-            log.info { "[deleteSchedule] 일정 삭제 완료: id=$id" }
-        }
-    }
-
-    // ========================================
-    // Other-Service (API 없이 다른 서비스에서 호출)
-    // ========================================
-    @Transactional(readOnly = true)
-    fun findSummaryWithLock(id: Long): ScheduleSummaryResponse {
+    fun findStateWithLock(id: Long): ScheduleStateResponse {
        log.info { "[findDateTimeById] 일정 개요 조회 시작 : id=$id" }

        val schedule: ScheduleEntity = scheduleRepository.findByIdForUpdate(id)
@ -188,20 +77,20 @@ class ScheduleService(
                throw ScheduleException(ScheduleErrorCode.SCHEDULE_NOT_FOUND)
            }

-        return schedule.toSummaryResponse()
+        return schedule.toStateResponse()
            .also {
                log.info { "[findDateTimeById] 일정 개요 조회 완료: id=$id" }
            }
    }

    @Transactional(readOnly = true)
-    fun findScheduleOverviewById(id: Long): ScheduleOverviewResponse {
+    fun findWithThemeAndStore(id: Long): ScheduleWithThemeAndStoreResponse {
        val overview: ScheduleOverview = scheduleRepository.findOverviewByIdOrNull(id) ?: run {
            log.warn { "[findScheduleOverview] 일정 개요 조회 실패: id=$id" }
            throw ScheduleException(ScheduleErrorCode.SCHEDULE_NOT_FOUND)
        }

-        return overview.toOverviewResponse()
+        return overview.toResponseWithThemeAndStore()
    }

    @Transactional
@ -213,16 +102,13 @@ class ScheduleService(
        }
    }

-    // ========================================
-    // Common (공통 메서드)
-    // ========================================
-    private fun findOrThrow(id: Long): ScheduleEntity {
-        log.info { "[findOrThrow] 일정 조회 시작: id=$id" }
+    private fun findForUpdateOrThrow(id: Long): ScheduleEntity {
+        log.info { "[findForUpdateOrThrow] 일정 LOCK + 조회 시작: id=$id" }

-        return scheduleRepository.findByIdOrNull(id)
-            ?.also { log.info { "[findOrThrow] 일정 조회 완료: id=$id" } }
+        return scheduleRepository.findByIdForUpdate(id)
+            ?.also { log.info { "[findForUpdateOrThrow] 일정 조회 완료: id=$id" } }
            ?: run {
-                log.warn { "[updateSchedule] 일정 조회 실패. id=$id" }
+                log.warn { "[findForUpdateOrThrow] 일정 조회 실패. id=$id" }
                throw ScheduleException(ScheduleErrorCode.SCHEDULE_NOT_FOUND)
            }
    }
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/business/ScheduleValidator.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/business/ScheduleValidator.kt
@ -6,8 +6,8 @@ import com.sangdol.roomescape.schedule.exception.ScheduleException
 import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleEntity
 import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleRepository
 import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus
-import com.sangdol.roomescape.schedule.web.ScheduleCreateRequest
-import com.sangdol.roomescape.schedule.web.ScheduleUpdateRequest
+import com.sangdol.roomescape.schedule.dto.ScheduleCreateRequest
+import com.sangdol.roomescape.schedule.dto.ScheduleUpdateRequest
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
 import org.springframework.stereotype.Component
@ -22,11 +22,20 @@ private val log: KLogger = KotlinLogging.logger {}
 class ScheduleValidator(
    private val scheduleRepository: ScheduleRepository
 ) {
+    fun validateCanHold(schedule: ScheduleEntity) {
+        if (schedule.status != ScheduleStatus.AVAILABLE) {
+            log.info { "[validateCanHold] HOLD 실패: id=${schedule.id}, status=${schedule.status}" }
+            throw ScheduleException(ScheduleErrorCode.SCHEDULE_NOT_AVAILABLE)
+        }
+
+        validateNotInPast(schedule.date, schedule.time)
+    }
+
    fun validateCanDelete(schedule: ScheduleEntity) {
        val status: ScheduleStatus = schedule.status

        if (status !in listOf(ScheduleStatus.AVAILABLE, ScheduleStatus.BLOCKED)) {
-            log.info { "[ScheduleValidator.validateCanDelete] 삭제 실패: id=${schedule.id} / status=${status}" }
+            log.info { "[validateCanDelete] 삭제 실패: id=${schedule.id} / status=${status}" }
            throw ScheduleException(ScheduleErrorCode.SCHEDULE_IN_USE)
        }
    }
@ -51,7 +60,7 @@ class ScheduleValidator(
    private fun validateAlreadyExists(storeId: Long, date: LocalDate, themeId: Long, time: LocalTime) {
        if (scheduleRepository.existsDuplicate(storeId, date, themeId, time)) {
            log.info {
-                "[ScheduleValidator.validateAlreadyExists] 동일한 날짜, 테마, 시간 존재로 인한 실패: date=${date} / themeId=${themeId} / time=${time}"
+                "[validateAlreadyExists] 동일한 날짜, 테마, 시간 존재로 인한 실패: date=${date} / themeId=${themeId} / time=${time}"
            }
            throw ScheduleException(ScheduleErrorCode.SCHEDULE_ALREADY_EXISTS)
        }
@ -63,7 +72,7 @@ class ScheduleValidator(

        if (inputDateTime.isBefore(now)) {
            log.info {
-                "[ScheduleValidator.validateDateTime] 이전 시간 선택으로 인한 실패: date=${date} / time=${time}"
+                "[validateDateTime] 이전 시간 선택으로 인한 실패: date=${date} / time=${time}"
            }
            throw ScheduleException(ScheduleErrorCode.PAST_DATE_TIME)
        }
@ -73,7 +82,7 @@ class ScheduleValidator(
        scheduleRepository.findStoreSchedulesWithThemeByDate(storeId, date, themeId)
            .firstOrNull { it.containsTime(time) }
            ?.let {
-                log.info { "[ScheduleValidator.validateTimeNotConflict] 시간이 겹치는 일정 존재: conflictSchedule(Id=${it.id}, time=${it.time}~${it.getEndAt()})" }
+                log.info { "[validateTimeNotConflict] 시간이 겹치는 일정 존재: conflictSchedule(Id=${it.id}, time=${it.time}~${it.getEndAt()})" }
                throw ScheduleException(ScheduleErrorCode.SCHEDULE_TIME_CONFLICT)
            }
    }
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/docs/ScheduleAPI.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/docs/ScheduleAPI.kt
@ -7,7 +7,11 @@ import com.sangdol.roomescape.auth.web.support.AdminOnly
 import com.sangdol.roomescape.auth.web.support.Public
 import com.sangdol.roomescape.auth.web.support.UserOnly
 import com.sangdol.roomescape.common.types.AuditingInfo
-import com.sangdol.roomescape.schedule.web.*
+import com.sangdol.roomescape.schedule.dto.AdminScheduleSummaryListResponse
+import com.sangdol.roomescape.schedule.dto.ScheduleCreateRequest
+import com.sangdol.roomescape.schedule.dto.ScheduleCreateResponse
+import com.sangdol.roomescape.schedule.dto.ScheduleUpdateRequest
+import com.sangdol.roomescape.schedule.dto.ScheduleWithThemeListResponse
 import io.swagger.v3.oas.annotations.Operation
 import io.swagger.v3.oas.annotations.responses.ApiResponse
 import io.swagger.v3.oas.annotations.responses.ApiResponses
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/dto/AdminScheduleFindDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/dto/AdminScheduleFindDTO.kt
@ -0,0 +1,16 @@
+package com.sangdol.roomescape.schedule.dto
+
+import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus
+import java.time.LocalTime
+
+data class AdminScheduleSummaryResponse(
+    val id: Long,
+    val themeName: String,
+    val startFrom: LocalTime,
+    val endAt: LocalTime,
+    val status: ScheduleStatus,
+)
+
+data class AdminScheduleSummaryListResponse(
+    val schedules: List<AdminScheduleSummaryResponse>
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/dto/AdminScheduleWriteDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/dto/AdminScheduleWriteDTO.kt
@ -0,0 +1,24 @@
+package com.sangdol.roomescape.schedule.dto
+
+import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus
+import java.time.LocalDate
+import java.time.LocalTime
+
+data class ScheduleCreateRequest(
+    val date: LocalDate,
+    val time: LocalTime,
+    val themeId: Long
+)
+
+data class ScheduleCreateResponse(
+    val id: Long
+)
+
+data class ScheduleUpdateRequest(
+    val time: LocalTime? = null,
+    val status: ScheduleStatus? = null
+) {
+    fun isAllParamsNull(): Boolean {
+        return time == null && status == null
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/dto/ScheduleFindDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/dto/ScheduleFindDTO.kt
@ -0,0 +1,47 @@
+package com.sangdol.roomescape.schedule.dto
+
+import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus
+import java.time.Instant
+import java.time.LocalDate
+import java.time.LocalTime
+
+data class ScheduleResponse(
+    val id: Long,
+    val date: LocalDate,
+    val startFrom: LocalTime,
+    val endAt: LocalTime,
+    val status: ScheduleStatus,
+)
+
+data class ScheduleStateResponse(
+    val date: LocalDate,
+    val startFrom: LocalTime,
+    val themeId: Long,
+    val status: ScheduleStatus,
+    val holdExpiredAt: Instant? = null
+)
+
+data class ScheduleThemeInfo(
+    val id: Long,
+    val name: String
+)
+
+data class ScheduleStoreInfo(
+    val id: Long,
+    val name: String
+)
+
+data class ScheduleWithThemeResponse(
+    val schedule: ScheduleResponse,
+    val theme: ScheduleThemeInfo,
+)
+
+data class ScheduleWithThemeAndStoreResponse(
+    val schedule: ScheduleResponse,
+    val theme: ScheduleThemeInfo,
+    val store: ScheduleStoreInfo
+)
+
+data class ScheduleWithThemeListResponse(
+    val schedules: List<ScheduleWithThemeResponse>
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/infrastructure/persistence/ScheduleRepository.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/infrastructure/persistence/ScheduleRepository.kt
@ -126,6 +126,26 @@ interface ScheduleRepository : JpaRepository<ScheduleEntity, Long> {
        expiredAt: Instant = Instant.now().plusSeconds(5 * 60)
    ): Int

+    @Modifying
+    @Query(
+        """
+        SELECT
+            s.id
+        FROM
+            schedule s
+        WHERE 
+            s.status = 'HOLD'
+            AND s.hold_expired_at <= :now
+            AND NOT EXISTS (
+                SELECT 1
+                FROM reservation r
+                WHERE r.schedule_id = s.id AND (r.status = 'PENDING' OR r.status = 'PAYMENT_IN_PROGRESS')
+            )
+        FOR UPDATE SKIP LOCKED
+        """, nativeQuery = true
+    )
+    fun findAllExpiredHeldSchedules(@Param("now") now: Instant): List<Long>
+
    @Modifying
    @Query(
        """
@ -135,14 +155,8 @@ interface ScheduleRepository : JpaRepository<ScheduleEntity, Long> {
            s.status = com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus.AVAILABLE,
            s.holdExpiredAt = NULL 
        WHERE 
-            s.status = com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus.HOLD
-            AND s.holdExpiredAt <= :now
-            AND NOT EXISTS (
-                SELECT 1
-                FROM ReservationEntity r
-                WHERE r.scheduleId = s._id
-            )
+            s._id IN :scheduleIds
        """
    )
-    fun releaseExpiredHolds(@Param("now") now: Instant): Int
+    fun releaseHeldSchedules(@Param("scheduleIds") scheduleIds: List<Long>): Int
 }
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/mapper/AdminScheduleMappingExtensions.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/mapper/AdminScheduleMappingExtensions.kt
@ -0,0 +1,17 @@
+package com.sangdol.roomescape.schedule.mapper
+
+import com.sangdol.roomescape.schedule.business.domain.ScheduleOverview
+import com.sangdol.roomescape.schedule.dto.AdminScheduleSummaryListResponse
+import com.sangdol.roomescape.schedule.dto.AdminScheduleSummaryResponse
+
+fun ScheduleOverview.toAdminSummaryResponse() = AdminScheduleSummaryResponse(
+    id = this.id,
+    themeName = this.themeName,
+    startFrom = this.time,
+    endAt = this.getEndAt(),
+    status = this.status
+)
+
+fun List<ScheduleOverview>.toAdminSummaryResponse() = AdminScheduleSummaryListResponse(
+    this.map { it.toAdminSummaryResponse() }
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/mapper/ScheduleMappingExtensions.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/mapper/ScheduleMappingExtensions.kt
@ -0,0 +1,28 @@
+package com.sangdol.roomescape.schedule.mapper
+
+import com.sangdol.roomescape.schedule.business.domain.ScheduleOverview
+import com.sangdol.roomescape.schedule.dto.*
+import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleEntity
+
+fun ScheduleEntity.toStateResponse() = ScheduleStateResponse(
+    date = this.date,
+    startFrom = this.time,
+    themeId = this.themeId,
+    status = this.status,
+    holdExpiredAt = this.holdExpiredAt
+)
+
+fun ScheduleOverview.toResponseWithThemeAndStore() = ScheduleWithThemeAndStoreResponse(
+    schedule = ScheduleResponse(this.id, this.date, this.time, this.getEndAt(), this.status),
+    theme = ScheduleThemeInfo(this.themeId, this.themeName),
+    store = ScheduleStoreInfo(this.storeId, this.storeName),
+)
+
+fun ScheduleOverview.toResponseWithTheme() = ScheduleWithThemeResponse(
+    schedule = ScheduleResponse(this.id, this.date, this.time, this.getEndAt(), this.status),
+    theme = ScheduleThemeInfo(this.themeId, this.themeName),
+)
+
+fun List<ScheduleOverview>.toResponseWithTheme() = ScheduleWithThemeListResponse(
+    this.map { it.toResponseWithTheme() }
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/web/AdminScheduleController.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/web/AdminScheduleController.kt
@ -2,8 +2,13 @@ package com.sangdol.roomescape.schedule.web

 import com.sangdol.common.types.web.CommonApiResponse
 import com.sangdol.roomescape.common.types.AuditingInfo
+import com.sangdol.roomescape.schedule.business.AdminScheduleService
 import com.sangdol.roomescape.schedule.business.ScheduleService
 import com.sangdol.roomescape.schedule.docs.AdminScheduleAPI
+import com.sangdol.roomescape.schedule.dto.AdminScheduleSummaryListResponse
+import com.sangdol.roomescape.schedule.dto.ScheduleCreateRequest
+import com.sangdol.roomescape.schedule.dto.ScheduleCreateResponse
+import com.sangdol.roomescape.schedule.dto.ScheduleUpdateRequest
 import jakarta.validation.Valid
 import org.springframework.format.annotation.DateTimeFormat
 import org.springframework.http.ResponseEntity
@ -13,7 +18,7 @@ import java.time.LocalDate
@RestController
@RequestMapping("/admin")
 class AdminScheduleController(
-    private val scheduleService: ScheduleService,
+    private val adminScheduleService: AdminScheduleService,
 ) : AdminScheduleAPI {
    @GetMapping("/stores/{storeId}/schedules")
    override fun searchSchedules(
@ -21,7 +26,7 @@ class AdminScheduleController(
        @RequestParam(required = false) @DateTimeFormat(pattern = "yyyy-MM-dd") date: LocalDate?,
        @RequestParam(required = false) themeId: Long?,
    ): ResponseEntity<CommonApiResponse<AdminScheduleSummaryListResponse>> {
-        val response = scheduleService.searchSchedules(storeId, date, themeId)
+        val response = adminScheduleService.searchSchedules(storeId, date, themeId)

        return ResponseEntity.ok(CommonApiResponse(response))
    }
@ -30,7 +35,7 @@ class AdminScheduleController(
    override fun findScheduleAudit(
        @PathVariable("id") id: Long
    ): ResponseEntity<CommonApiResponse<AuditingInfo>> {
-        val response = scheduleService.findScheduleAudit(id)
+        val response = adminScheduleService.findScheduleAudit(id)

        return ResponseEntity.ok(CommonApiResponse(response))
    }
@ -40,7 +45,7 @@ class AdminScheduleController(
        @PathVariable("storeId") storeId: Long,
        @Valid @RequestBody request: ScheduleCreateRequest
    ): ResponseEntity<CommonApiResponse<ScheduleCreateResponse>> {
-        val response = scheduleService.createSchedule(storeId, request)
+        val response = adminScheduleService.createSchedule(storeId, request)

        return ResponseEntity.ok(CommonApiResponse(response))
    }
@ -50,7 +55,7 @@ class AdminScheduleController(
        @PathVariable("id") id: Long,
        @Valid @RequestBody request: ScheduleUpdateRequest
    ): ResponseEntity<CommonApiResponse<Unit>> {
-        scheduleService.updateSchedule(id, request)
+        adminScheduleService.updateSchedule(id, request)

        return ResponseEntity.ok(CommonApiResponse(Unit))
    }
@ -59,7 +64,7 @@ class AdminScheduleController(
    override fun deleteSchedule(
        @PathVariable("id") id: Long
    ): ResponseEntity<CommonApiResponse<Unit>> {
-        scheduleService.deleteSchedule(id)
+        adminScheduleService.deleteSchedule(id)

        return ResponseEntity.noContent().build()
    }
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/web/AdminScheduleDto.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/web/AdminScheduleDto.kt
@ -1,55 +0,0 @@
-package com.sangdol.roomescape.schedule.web
-
-import com.sangdol.roomescape.schedule.business.domain.ScheduleOverview
-import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus
-import java.time.LocalDate
-import java.time.LocalTime
-
-// ========================================
-// All-Admin DTO (본사 + 매장)
-// ========================================
-data class AdminScheduleSummaryResponse(
-    val id: Long,
-    val themeName: String,
-    val startFrom: LocalTime,
-    val endAt: LocalTime,
-    val status: ScheduleStatus,
-)
-
-fun ScheduleOverview.toAdminSummaryResponse() = AdminScheduleSummaryResponse(
-    id = this.id,
-    themeName = this.themeName,
-    startFrom = this.time,
-    endAt = this.getEndAt(),
-    status = this.status
-)
-
-data class AdminScheduleSummaryListResponse(
-    val schedules: List<AdminScheduleSummaryResponse>
-)
-
-fun List<ScheduleOverview>.toAdminSummaryListResponse() = AdminScheduleSummaryListResponse(
-    this.map { it.toAdminSummaryResponse() }
-)
-
-// ========================================
-// Store Admin DTO (매장)
-// ========================================
-data class ScheduleCreateRequest(
-    val date: LocalDate,
-    val time: LocalTime,
-    val themeId: Long
-)
-
-data class ScheduleCreateResponse(
-    val id: Long
-)
-
-data class ScheduleUpdateRequest(
-    val time: LocalTime? = null,
-    val status: ScheduleStatus? = null
-) {
-    fun isAllParamsNull(): Boolean {
-        return time == null && status == null
-    }
-}
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/web/ScheduleController.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/web/ScheduleController.kt
@ -4,6 +4,7 @@ import com.sangdol.common.types.web.CommonApiResponse
 import com.sangdol.roomescape.schedule.business.ScheduleService
 import com.sangdol.roomescape.schedule.docs.PublicScheduleAPI
 import com.sangdol.roomescape.schedule.docs.UserScheduleAPI
+import com.sangdol.roomescape.schedule.dto.ScheduleWithThemeListResponse
 import org.springframework.format.annotation.DateTimeFormat
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.*
--- a/service/src/main/kotlin/com/sangdol/roomescape/schedule/web/ScheduleDto.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/schedule/web/ScheduleDto.kt
@ -1,78 +0,0 @@
-package com.sangdol.roomescape.schedule.web
-
-import com.sangdol.roomescape.schedule.business.domain.ScheduleOverview
-import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleEntity
-import com.sangdol.roomescape.schedule.infrastructure.persistence.ScheduleStatus
-import com.sangdol.roomescape.theme.infrastructure.persistence.Difficulty
-import java.time.LocalDate
-import java.time.LocalTime
-
-// ========================================
-// Public (인증 불필요)
-// ========================================
-data class ScheduleWithThemeResponse(
-    val id: Long,
-    val startFrom: LocalTime,
-    val endAt: LocalTime,
-    val themeId: Long,
-    val themeName: String,
-    val themeDifficulty: Difficulty,
-    val status: ScheduleStatus
-)
-
-fun ScheduleOverview.toResponse() = ScheduleWithThemeResponse(
-    id = this.id,
-    startFrom = this.time,
-    endAt = this.getEndAt(),
-    themeId = this.themeId,
-    themeName = this.themeName,
-    themeDifficulty = this.themeDifficulty,
-    status = this.status
-)
-
-data class ScheduleWithThemeListResponse(
-    val schedules: List<ScheduleWithThemeResponse>
-)
-
-fun List<ScheduleOverview>.toResponse() = ScheduleWithThemeListResponse(
-    this.map { it.toResponse() }
-)
-
-// ========================================
-// Other-Service (API 없이 다른 서비스에서 호출)
-// ========================================
-data class ScheduleSummaryResponse(
-    val date: LocalDate,
-    val time: LocalTime,
-    val themeId: Long,
-    val status: ScheduleStatus
-)
-
-fun ScheduleEntity.toSummaryResponse() = ScheduleSummaryResponse(
-    date = this.date,
-    time = this.time,
-    themeId = this.themeId,
-    status = this.status
-)
-
-data class ScheduleOverviewResponse(
-    val id: Long,
-    val storeId: Long,
-    val storeName: String,
-    val date: LocalDate,
-    val startFrom: LocalTime,
-    val endAt: LocalTime,
-    val themeId: Long,
-    val themeName: String,
-)
-
-fun ScheduleOverview.toOverviewResponse() = ScheduleOverviewResponse(
-    id = this.id,
-    storeId = this.storeId,
-    storeName = this.storeName,
-    date = this.date,
-    startFrom = this.time,
-    endAt = this.getEndAt(),
-    themeId = this.themeId,
-    themeName = this.themeName,
-)
--- a/service/src/main/kotlin/com/sangdol/roomescape/store/business/StoreService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/store/business/StoreService.kt
@ -4,12 +4,20 @@ import com.sangdol.common.persistence.IDGenerator
 import com.sangdol.roomescape.admin.business.AdminService
 import com.sangdol.roomescape.common.types.AuditingInfo
 import com.sangdol.roomescape.region.business.RegionService
+import com.sangdol.roomescape.store.dto.StoreDetailResponse
+import com.sangdol.roomescape.store.dto.StoreNameListResponse
+import com.sangdol.roomescape.store.dto.StoreInfoResponse
+import com.sangdol.roomescape.store.dto.StoreRegisterRequest
+import com.sangdol.roomescape.store.dto.StoreRegisterResponse
+import com.sangdol.roomescape.store.dto.StoreUpdateRequest
 import com.sangdol.roomescape.store.exception.StoreErrorCode
 import com.sangdol.roomescape.store.exception.StoreException
 import com.sangdol.roomescape.store.infrastructure.persistence.StoreEntity
 import com.sangdol.roomescape.store.infrastructure.persistence.StoreRepository
 import com.sangdol.roomescape.store.infrastructure.persistence.StoreStatus
-import com.sangdol.roomescape.store.web.*
+import com.sangdol.roomescape.store.mapper.toDetailResponse
+import com.sangdol.roomescape.store.mapper.toInfoResponse
+import com.sangdol.roomescape.store.mapper.toSimpleListResponse
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
 import org.springframework.stereotype.Service
@ -26,7 +34,7 @@ class StoreService(
    private val idGenerator: IDGenerator,
 ) {
    @Transactional(readOnly = true)
-    fun getDetail(id: Long): DetailStoreResponse {
+    fun getDetail(id: Long): StoreDetailResponse {
        log.info { "[getDetail] 매장 상세 조회 시작: id=${id}" }

        val store: StoreEntity = findOrThrow(id)
@ -85,7 +93,7 @@ class StoreService(
    }

    @Transactional(readOnly = true)
-    fun getAllActiveStores(sidoCode: String?, sigunguCode: String?): SimpleStoreListResponse {
+    fun getAllActiveStores(sidoCode: String?, sigunguCode: String?): StoreNameListResponse {
        log.info { "[getAllActiveStores] 전체 매장 조회 시작" }

        val regionCode: String? = when {
--- a/service/src/main/kotlin/com/sangdol/roomescape/store/business/StoreValidator.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/store/business/StoreValidator.kt
@ -3,8 +3,8 @@ package com.sangdol.roomescape.store.business
 import com.sangdol.roomescape.store.exception.StoreErrorCode
 import com.sangdol.roomescape.store.exception.StoreException
 import com.sangdol.roomescape.store.infrastructure.persistence.StoreRepository
-import com.sangdol.roomescape.store.web.StoreRegisterRequest
-import com.sangdol.roomescape.store.web.StoreUpdateRequest
+import com.sangdol.roomescape.store.dto.StoreRegisterRequest
+import com.sangdol.roomescape.store.dto.StoreUpdateRequest
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
 import org.springframework.stereotype.Component
--- a/service/src/main/kotlin/com/sangdol/roomescape/store/docs/StoreAPI.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/store/docs/StoreAPI.kt
@ -5,7 +5,12 @@ import com.sangdol.roomescape.admin.infrastructure.persistence.AdminType
 import com.sangdol.roomescape.admin.infrastructure.persistence.Privilege
 import com.sangdol.roomescape.auth.web.support.AdminOnly
 import com.sangdol.roomescape.auth.web.support.Public
-import com.sangdol.roomescape.store.web.*
+import com.sangdol.roomescape.store.dto.StoreDetailResponse
+import com.sangdol.roomescape.store.dto.StoreNameListResponse
+import com.sangdol.roomescape.store.dto.StoreInfoResponse
+import com.sangdol.roomescape.store.dto.StoreRegisterRequest
+import com.sangdol.roomescape.store.dto.StoreRegisterResponse
+import com.sangdol.roomescape.store.dto.StoreUpdateRequest
 import io.swagger.v3.oas.annotations.Operation
 import io.swagger.v3.oas.annotations.responses.ApiResponse
 import io.swagger.v3.oas.annotations.responses.ApiResponses
@ -21,7 +26,7 @@ interface AdminStoreAPI {
    @ApiResponses(ApiResponse(responseCode = "200", useReturnTypeSchema = true))
    fun findStoreDetail(
        @PathVariable id: Long
-    ): ResponseEntity<CommonApiResponse<DetailStoreResponse>>
+    ): ResponseEntity<CommonApiResponse<StoreDetailResponse>>

    @AdminOnly(type = AdminType.HQ, privilege = Privilege.CREATE)
    @Operation(summary = "매장 등록")
@ -53,7 +58,7 @@ interface PublicStoreAPI {
    fun getStores(
        @RequestParam(value = "sido", required = false) sidoCode: String?,
        @RequestParam(value = "sigungu", required = false) sigunguCode: String?
-    ): ResponseEntity<CommonApiResponse<SimpleStoreListResponse>>
+    ): ResponseEntity<CommonApiResponse<StoreNameListResponse>>

    @Public
    @Operation(summary = "특정 매장의 정보 조회")
--- a/service/src/main/kotlin/com/sangdol/roomescape/store/dto/AdminStoreWriteDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/store/dto/AdminStoreWriteDTO.kt
@ -0,0 +1,19 @@
+package com.sangdol.roomescape.store.dto
+
+data class StoreRegisterRequest(
+    val name: String,
+    val address: String,
+    val contact: String,
+    val businessRegNum: String,
+    val regionCode: String
+)
+
+data class StoreRegisterResponse(
+    val id: Long
+)
+
+data class StoreUpdateRequest(
+    val name: String? = null,
+    val address: String? = null,
+    val contact: String? = null,
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/store/dto/StoreFindDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/store/dto/StoreFindDTO.kt
@ -0,0 +1,31 @@
+package com.sangdol.roomescape.store.dto
+
+import com.sangdol.roomescape.common.types.AuditingInfo
+import com.sangdol.roomescape.region.dto.RegionInfoResponse
+
+data class StoreNameResponse(
+    val id: Long,
+    val name: String
+)
+
+data class StoreNameListResponse(
+    val stores: List<StoreNameResponse>
+)
+
+data class StoreInfoResponse(
+    val id: Long,
+    val name: String,
+    val address: String,
+    val contact: String,
+    val businessRegNum: String
+)
+
+data class StoreDetailResponse(
+    val id: Long,
+    val name: String,
+    val address: String,
+    val contact: String,
+    val businessRegNum: String,
+    val region: RegionInfoResponse,
+    val audit: AuditingInfo
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/store/mapper/StoreMappingExtensions.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/store/mapper/StoreMappingExtensions.kt
@ -0,0 +1,34 @@
+package com.sangdol.roomescape.store.mapper
+
+import com.sangdol.roomescape.common.types.AuditingInfo
+import com.sangdol.roomescape.region.dto.RegionInfoResponse
+import com.sangdol.roomescape.store.dto.StoreDetailResponse
+import com.sangdol.roomescape.store.dto.StoreInfoResponse
+import com.sangdol.roomescape.store.dto.StoreNameListResponse
+import com.sangdol.roomescape.store.dto.StoreNameResponse
+import com.sangdol.roomescape.store.infrastructure.persistence.StoreEntity
+
+fun StoreEntity.toInfoResponse() = StoreInfoResponse(
+    id = this.id,
+    name = this.name,
+    address = this.address,
+    contact = this.contact,
+    businessRegNum = this.businessRegNum
+)
+
+fun StoreEntity.toDetailResponse(
+    region: RegionInfoResponse,
+    audit: AuditingInfo
+) = StoreDetailResponse(
+    id = this.id,
+    name = this.name,
+    address = this.address,
+    contact = this.contact,
+    businessRegNum = this.businessRegNum,
+    region = region,
+    audit = audit,
+)
+
+fun List<StoreEntity>.toSimpleListResponse() = StoreNameListResponse(
+    stores = this.map { StoreNameResponse(id = it.id, name = it.name) }
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/store/web/AdminStoreController.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/store/web/AdminStoreController.kt
@ -3,6 +3,10 @@ package com.sangdol.roomescape.store.web
 import com.sangdol.common.types.web.CommonApiResponse
 import com.sangdol.roomescape.store.business.StoreService
 import com.sangdol.roomescape.store.docs.AdminStoreAPI
+import com.sangdol.roomescape.store.dto.StoreDetailResponse
+import com.sangdol.roomescape.store.dto.StoreRegisterRequest
+import com.sangdol.roomescape.store.dto.StoreRegisterResponse
+import com.sangdol.roomescape.store.dto.StoreUpdateRequest
 import jakarta.validation.Valid
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.*
@ -16,8 +20,8 @@ class AdminStoreController(
    @GetMapping("/{id}/detail")
    override fun findStoreDetail(
        @PathVariable id: Long
-    ): ResponseEntity<CommonApiResponse<DetailStoreResponse>> {
-        val response: DetailStoreResponse = storeService.getDetail(id)
+    ): ResponseEntity<CommonApiResponse<StoreDetailResponse>> {
+        val response: StoreDetailResponse = storeService.getDetail(id)

        return ResponseEntity.ok(CommonApiResponse(response))
    }
--- a/service/src/main/kotlin/com/sangdol/roomescape/store/web/AdminStoreDto.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/store/web/AdminStoreDto.kt
@ -1,46 +0,0 @@
-package com.sangdol.roomescape.store.web
-
-import com.sangdol.roomescape.common.types.AuditingInfo
-import com.sangdol.roomescape.region.web.RegionInfoResponse
-import com.sangdol.roomescape.store.infrastructure.persistence.StoreEntity
-
-data class StoreRegisterRequest(
-    val name: String,
-    val address: String,
-    val contact: String,
-    val businessRegNum: String,
-    val regionCode: String
-)
-
-data class StoreRegisterResponse(
-    val id: Long
-)
-
-data class StoreUpdateRequest(
-    val name: String? = null,
-    val address: String? = null,
-    val contact: String? = null,
-)
-
-data class DetailStoreResponse(
-    val id: Long,
-    val name: String,
-    val address: String,
-    val contact: String,
-    val businessRegNum: String,
-    val region: RegionInfoResponse,
-    val audit: AuditingInfo
-)
-
-fun StoreEntity.toDetailResponse(
-    region: RegionInfoResponse,
-    audit: AuditingInfo
-) = DetailStoreResponse(
-    id = this.id,
-    name = this.name,
-    address = this.address,
-    contact = this.contact,
-    businessRegNum = this.businessRegNum,
-    region = region,
-    audit = audit,
-)
--- a/service/src/main/kotlin/com/sangdol/roomescape/store/web/StoreController.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/store/web/StoreController.kt
@ -3,6 +3,8 @@ package com.sangdol.roomescape.store.web
 import com.sangdol.common.types.web.CommonApiResponse
 import com.sangdol.roomescape.store.business.StoreService
 import com.sangdol.roomescape.store.docs.PublicStoreAPI
+import com.sangdol.roomescape.store.dto.StoreNameListResponse
+import com.sangdol.roomescape.store.dto.StoreInfoResponse
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.GetMapping
 import org.springframework.web.bind.annotation.PathVariable
@ -18,7 +20,7 @@ class StoreController(
    override fun getStores(
        @RequestParam(value = "sido", required = false) sidoCode: String?,
        @RequestParam(value = "sigungu", required = false) sigunguCode: String?
-    ): ResponseEntity<CommonApiResponse<SimpleStoreListResponse>> {
+    ): ResponseEntity<CommonApiResponse<StoreNameListResponse>> {
        val response = storeService.getAllActiveStores(sidoCode, sigunguCode)

        return ResponseEntity.ok(CommonApiResponse(response))
--- a/service/src/main/kotlin/com/sangdol/roomescape/store/web/StoreDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/store/web/StoreDTO.kt
@ -1,32 +0,0 @@
-package com.sangdol.roomescape.store.web
-
-import com.sangdol.roomescape.store.infrastructure.persistence.StoreEntity
-
-data class SimpleStoreResponse(
-    val id: Long,
-    val name: String
-)
-
-data class SimpleStoreListResponse(
-    val stores: List<SimpleStoreResponse>
-)
-
-fun List<StoreEntity>.toSimpleListResponse() = SimpleStoreListResponse(
-    stores = this.map { SimpleStoreResponse(id = it.id, name = it.name) }
-)
-
-data class StoreInfoResponse(
-    val id: Long,
-    val name: String,
-    val address: String,
-    val contact: String,
-    val businessRegNum: String
-)
-
-fun StoreEntity.toInfoResponse() = StoreInfoResponse(
-    id = this.id,
-    name = this.name,
-    address = this.address,
-    contact = this.contact,
-    businessRegNum = this.businessRegNum
-)
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/business/AdminThemeService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/business/AdminThemeService.kt
@ -0,0 +1,136 @@
+package com.sangdol.roomescape.theme.business
+
+import com.sangdol.common.persistence.IDGenerator
+import com.sangdol.roomescape.admin.business.AdminService
+import com.sangdol.roomescape.common.types.AuditingInfo
+import com.sangdol.roomescape.theme.dto.ThemeDetailResponse
+import com.sangdol.roomescape.theme.dto.ThemeSummaryListResponse
+import com.sangdol.roomescape.theme.dto.ThemeNameListResponse
+import com.sangdol.roomescape.theme.dto.ThemeCreateRequest
+import com.sangdol.roomescape.theme.dto.ThemeCreateResponse
+import com.sangdol.roomescape.theme.dto.ThemeUpdateRequest
+import com.sangdol.roomescape.theme.exception.ThemeErrorCode
+import com.sangdol.roomescape.theme.exception.ThemeException
+import com.sangdol.roomescape.theme.infrastructure.persistence.ThemeEntity
+import com.sangdol.roomescape.theme.infrastructure.persistence.ThemeRepository
+import com.sangdol.roomescape.theme.mapper.toDetailResponse
+import com.sangdol.roomescape.theme.mapper.toSummaryListResponse
+import com.sangdol.roomescape.theme.mapper.toEntity
+import com.sangdol.roomescape.theme.mapper.toNameListResponse
+import io.github.oshai.kotlinlogging.KLogger
+import io.github.oshai.kotlinlogging.KotlinLogging
+import org.springframework.data.repository.findByIdOrNull
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+
+private val log: KLogger = KotlinLogging.logger {}
+
+@Service
+class AdminThemeService(
+    private val themeRepository: ThemeRepository,
+    private val themeValidator: ThemeValidator,
+    private val idGenerator: IDGenerator,
+    private val adminService: AdminService
+) {
+    @Transactional(readOnly = true)
+    fun findThemeSummaries(): ThemeSummaryListResponse {
+        log.info { "[findAdminThemes] 관리자 페이지에서의 테마 목록 조회 시작" }
+
+        return themeRepository.findAll()
+            .toSummaryListResponse()
+            .also { log.info { "[findAdminThemes] ${it.themes.size}개 테마 조회 완료" } }
+    }
+
+    @Transactional(readOnly = true)
+    fun findThemeDetail(id: Long): ThemeDetailResponse {
+        log.info { "[findAdminThemeDetail] 관리자 페이지에서의 테마 상세 정보 조회 시작: id=${id}" }
+
+        val theme: ThemeEntity = findOrThrow(id)
+
+        val createdBy = adminService.findOperatorOrUnknown(theme.createdBy)
+        val updatedBy = adminService.findOperatorOrUnknown(theme.updatedBy)
+        val audit = AuditingInfo(theme.createdAt, createdBy, theme.updatedAt, updatedBy)
+
+        return theme.toDetailResponse(audit)
+            .also { log.info { "[findAdminThemeDetail] 테마 상세 조회 완료: id=$id, name=${theme.name}" } }
+    }
+
+    @Transactional(readOnly = true)
+    fun findActiveThemes(): ThemeNameListResponse {
+        log.info { "[findActiveThemes] open 상태인 모든 테마 조회 시작" }
+
+        return themeRepository.findActiveThemes()
+            .toNameListResponse()
+            .also {
+                log.info { "[findActiveThemes] ${it.themes.size}개 테마 조회 완료" }
+            }
+    }
+
+
+    @Transactional
+    fun createTheme(request: ThemeCreateRequest): ThemeCreateResponse {
+        log.info { "[createTheme] 테마 생성 시작: name=${request.name}" }
+
+        themeValidator.validateCanCreate(request)
+
+        val theme: ThemeEntity = request.toEntity(id = idGenerator.create())
+            .also { themeRepository.save(it) }
+
+        return ThemeCreateResponse(theme.id).also {
+            log.info { "[createTheme] 테마 생성 완료: id=${theme.id}, name=${theme.name}" }
+        }
+    }
+
+
+    @Transactional
+    fun deleteTheme(id: Long) {
+        log.info { "[deleteTheme] 테마 삭제 시작: id=${id}" }
+
+        val theme: ThemeEntity = findOrThrow(id)
+
+        themeRepository.delete(theme).also {
+            log.info { "[deleteTheme] 테마 삭제 완료: id=$id, name=${theme.name}" }
+        }
+    }
+
+    @Transactional
+    fun updateTheme(id: Long, request: ThemeUpdateRequest) {
+        log.info { "[updateTheme] 테마 수정 시작: id=${id}, request=${request}" }
+
+        if (request.isAllParamsNull()) {
+            log.info { "[updateTheme] 테마 변경 사항 없음: id=${id}" }
+            return
+        }
+
+        themeValidator.validateCanUpdate(request)
+
+        val theme: ThemeEntity = findOrThrow(id)
+
+        theme.modifyIfNotNull(
+            request.name,
+            request.description,
+            request.thumbnailUrl,
+            request.difficulty,
+            request.price,
+            request.minParticipants,
+            request.maxParticipants,
+            request.availableMinutes,
+            request.expectedMinutesFrom,
+            request.expectedMinutesTo,
+            request.isActive,
+        ).also {
+            log.info { "[updateTheme] 테마 수정 완료: id=$id, request=${request}" }
+        }
+    }
+
+    private fun findOrThrow(id: Long): ThemeEntity {
+        log.info { "[findOrThrow] 테마 조회 시작: id=$id" }
+
+        return themeRepository.findByIdOrNull(id)
+            ?.also { log.info { "[findOrThrow] 테마 조회 완료: id=$id" } }
+            ?: run {
+                log.warn { "[findOrThrow] 테마 조회 실패: id=$id" }
+                throw ThemeException(ThemeErrorCode.THEME_NOT_FOUND)
+            }
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/business/DateUtils.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/business/DateUtils.kt
@ -1,11 +0,0 @@
-package com.sangdol.roomescape.theme.business
-
-import java.time.DayOfWeek
-import java.time.LocalDate
-import java.time.temporal.TemporalAdjusters
-
-object DateUtils {
-    fun getSundayOfPreviousWeek(date: LocalDate): LocalDate = date
-        .minusWeeks(1)
-        .with(TemporalAdjusters.previousOrSame(DayOfWeek.SUNDAY))
-}
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/business/ThemeService.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/business/ThemeService.kt
@ -1,44 +1,38 @@
 package com.sangdol.roomescape.theme.business

-import com.sangdol.common.persistence.IDGenerator
 import com.sangdol.common.utils.KoreaDate
-import com.sangdol.roomescape.admin.business.AdminService
-import com.sangdol.roomescape.common.types.AuditingInfo
+import com.sangdol.roomescape.theme.dto.ThemeInfoListResponse
+import com.sangdol.roomescape.theme.dto.ThemeInfoResponse
 import com.sangdol.roomescape.theme.exception.ThemeErrorCode
 import com.sangdol.roomescape.theme.exception.ThemeException
-import com.sangdol.roomescape.theme.infrastructure.persistence.ThemeEntity
 import com.sangdol.roomescape.theme.infrastructure.persistence.ThemeRepository
-import com.sangdol.roomescape.theme.web.*
+import com.sangdol.roomescape.theme.mapper.toInfoResponse
+import com.sangdol.roomescape.theme.mapper.toListResponse
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
 import org.springframework.data.repository.findByIdOrNull
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
+import java.time.DayOfWeek
+import java.time.LocalDate
+import java.time.temporal.TemporalAdjusters

 private val log: KLogger = KotlinLogging.logger {}

-/**
- * Structure:
- * - Public: 모두가 접근 가능한 메서드
- * - Store Admin: 매장 관리자가 사용하는 메서드
- * - HQ Admin: 본사 관리자가 사용하는 메서드
- * - Common: 공통 메서드
- */
@Service
 class ThemeService(
-    private val themeRepository: ThemeRepository,
-    private val themeValidator: ThemeValidator,
-    private val idGenerator: IDGenerator,
-    private val adminService: AdminService
+    private val themeRepository: ThemeRepository
 ) {
-    // ========================================
-    // Public (인증 불필요)
-    // ========================================
    @Transactional(readOnly = true)
    fun findInfoById(id: Long): ThemeInfoResponse {
        log.info { "[findInfoById] 테마 조회 시작: id=$id" }

-        return findOrThrow(id).toInfoResponse()
+        val theme = themeRepository.findByIdOrNull(id) ?: run {
+            log.warn { "[updateTheme] 테마 조회 실패: id=$id" }
+            throw ThemeException(ThemeErrorCode.THEME_NOT_FOUND)
+        }
+
+        return theme.toInfoResponse()
            .also { log.info { "[findInfoById] 테마 조회 완료: id=$id" } }
    }

@ -54,115 +48,11 @@ class ThemeService(
            .also {
                log.info { "[findMostReservedThemeLastWeek] ${it.themes.size} / $count 개의 인기 테마 조회 완료" }
            }
-
-    }
-
-    // ========================================
-    // HQ Admin (본사)
-    // ========================================
-    @Transactional(readOnly = true)
-    fun findAdminThemes(): AdminThemeSummaryListResponse {
-        log.info { "[findAdminThemes] 관리자 페이지에서의 테마 목록 조회 시작" }
-
-        return themeRepository.findAll()
-            .toAdminThemeSummaryListResponse()
-            .also { log.info { "[findAdminThemes] ${it.themes.size}개 테마 조회 완료" } }
-    }
-
-    @Transactional(readOnly = true)
-    fun findAdminThemeDetail(id: Long): AdminThemeDetailResponse {
-        log.info { "[findAdminThemeDetail] 관리자 페이지에서의 테마 상세 정보 조회 시작: id=${id}" }
-
-        val theme: ThemeEntity = findOrThrow(id)
-
-        val createdBy = adminService.findOperatorOrUnknown(theme.createdBy)
-        val updatedBy = adminService.findOperatorOrUnknown(theme.updatedBy)
-        val audit = AuditingInfo(theme.createdAt, createdBy, theme.updatedAt, updatedBy)
-
-        return theme.toAdminThemeDetailResponse(audit)
-            .also { log.info { "[findAdminThemeDetail] 테마 상세 조회 완료: id=$id, name=${theme.name}" } }
-    }
-
-    @Transactional
-    fun createTheme(request: ThemeCreateRequest): ThemeCreateResponse {
-        log.info { "[createTheme] 테마 생성 시작: name=${request.name}" }
-
-        themeValidator.validateCanCreate(request)
-
-        val theme: ThemeEntity = request.toEntity(id = idGenerator.create())
-            .also { themeRepository.save(it) }
-
-        return ThemeCreateResponse(theme.id).also {
-            log.info { "[createTheme] 테마 생성 완료: id=${theme.id}, name=${theme.name}" }
-        }
-    }
-
-    @Transactional
-    fun deleteTheme(id: Long) {
-        log.info { "[deleteTheme] 테마 삭제 시작: id=${id}" }
-
-        val theme: ThemeEntity = findOrThrow(id)
-
-        themeRepository.delete(theme).also {
-            log.info { "[deleteTheme] 테마 삭제 완료: id=$id, name=${theme.name}" }
-        }
-    }
-
-    @Transactional
-    fun updateTheme(id: Long, request: ThemeUpdateRequest) {
-        log.info { "[updateTheme] 테마 수정 시작: id=${id}, request=${request}" }
-
-        if (request.isAllParamsNull()) {
-            log.info { "[updateTheme] 테마 변경 사항 없음: id=${id}" }
-            return
-        }
-
-        themeValidator.validateCanUpdate(request)
-
-        val theme: ThemeEntity = findOrThrow(id)
-
-        theme.modifyIfNotNull(
-            request.name,
-            request.description,
-            request.thumbnailUrl,
-            request.difficulty,
-            request.price,
-            request.minParticipants,
-            request.maxParticipants,
-            request.availableMinutes,
-            request.expectedMinutesFrom,
-            request.expectedMinutesTo,
-            request.isActive,
-        ).also {
-            log.info { "[updateTheme] 테마 수정 완료: id=$id, request=${request}" }
-        }
-    }
-
-    // ========================================
-    // Store Admin (매장)
-    // ========================================
-    @Transactional(readOnly = true)
-    fun findActiveThemes(): SimpleActiveThemeListResponse {
-        log.info { "[findActiveThemes] open 상태인 모든 테마 조회 시작" }
-
-        return themeRepository.findActiveThemes()
-            .toSimpleActiveThemeResponse()
-            .also {
-                log.info { "[findActiveThemes] ${it.themes.size}개 테마 조회 완료" }
-            }
-    }
-
-    // ========================================
-    // Common (공통 메서드)
-    // ========================================
-    private fun findOrThrow(id: Long): ThemeEntity {
-        log.info { "[findOrThrow] 테마 조회 시작: id=$id" }
-
-        return themeRepository.findByIdOrNull(id)
-            ?.also { log.info { "[findOrThrow] 테마 조회 완료: id=$id" } }
-            ?: run {
-                log.warn { "[updateTheme] 테마 조회 실패: id=$id" }
-                throw ThemeException(ThemeErrorCode.THEME_NOT_FOUND)
-            }
    }
 }
+
+object DateUtils {
+    fun getSundayOfPreviousWeek(date: LocalDate): LocalDate = date
+        .minusWeeks(1)
+        .with(TemporalAdjusters.previousOrSame(DayOfWeek.SUNDAY))
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/business/ThemeValidator.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/business/ThemeValidator.kt
@ -3,8 +3,8 @@ package com.sangdol.roomescape.theme.business
 import com.sangdol.roomescape.theme.exception.ThemeErrorCode
 import com.sangdol.roomescape.theme.exception.ThemeException
 import com.sangdol.roomescape.theme.infrastructure.persistence.ThemeRepository
-import com.sangdol.roomescape.theme.web.ThemeCreateRequest
-import com.sangdol.roomescape.theme.web.ThemeUpdateRequest
+import com.sangdol.roomescape.theme.dto.ThemeCreateRequest
+import com.sangdol.roomescape.theme.dto.ThemeUpdateRequest
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
 import org.springframework.stereotype.Component
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/docs/ThemeApi.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/docs/ThemeApi.kt
@ -5,7 +5,14 @@ import com.sangdol.roomescape.admin.infrastructure.persistence.AdminType
 import com.sangdol.roomescape.admin.infrastructure.persistence.Privilege
 import com.sangdol.roomescape.auth.web.support.AdminOnly
 import com.sangdol.roomescape.auth.web.support.Public
-import com.sangdol.roomescape.theme.web.*
+import com.sangdol.roomescape.theme.dto.ThemeDetailResponse
+import com.sangdol.roomescape.theme.dto.ThemeSummaryListResponse
+import com.sangdol.roomescape.theme.dto.ThemeNameListResponse
+import com.sangdol.roomescape.theme.dto.ThemeCreateRequest
+import com.sangdol.roomescape.theme.dto.ThemeCreateResponse
+import com.sangdol.roomescape.theme.dto.ThemeInfoListResponse
+import com.sangdol.roomescape.theme.dto.ThemeInfoResponse
+import com.sangdol.roomescape.theme.dto.ThemeUpdateRequest
 import io.swagger.v3.oas.annotations.Operation
 import io.swagger.v3.oas.annotations.responses.ApiResponse
 import io.swagger.v3.oas.annotations.responses.ApiResponses
@ -20,12 +27,12 @@ interface AdminThemeAPI {
    @AdminOnly(type = AdminType.HQ, privilege = Privilege.READ_SUMMARY)
    @Operation(summary = "모든 테마 조회")
    @ApiResponses(ApiResponse(responseCode = "200", useReturnTypeSchema = true))
-    fun getAdminThemeSummaries(): ResponseEntity<CommonApiResponse<AdminThemeSummaryListResponse>>
+    fun getAdminThemeSummaries(): ResponseEntity<CommonApiResponse<ThemeSummaryListResponse>>

    @AdminOnly(type = AdminType.HQ, privilege = Privilege.READ_DETAIL)
    @Operation(summary = "테마 상세 조회")
    @ApiResponses(ApiResponse(responseCode = "200", useReturnTypeSchema = true))
-    fun findAdminThemeDetail(@PathVariable("id") id: Long): ResponseEntity<CommonApiResponse<AdminThemeDetailResponse>>
+    fun findAdminThemeDetail(@PathVariable("id") id: Long): ResponseEntity<CommonApiResponse<ThemeDetailResponse>>

    @AdminOnly(type = AdminType.HQ, privilege = Privilege.CREATE)
    @Operation(summary = "테마 추가")
@ -48,7 +55,7 @@ interface AdminThemeAPI {
    @AdminOnly(privilege = Privilege.READ_SUMMARY)
    @Operation(summary = "현재 활성화 상태인 테마 ID + 이름 목록 조회")
    @ApiResponses(ApiResponse(responseCode = "200", useReturnTypeSchema = true))
-    fun getActiveThemes(): ResponseEntity<CommonApiResponse<SimpleActiveThemeListResponse>>
+    fun getActiveThemes(): ResponseEntity<CommonApiResponse<ThemeNameListResponse>>
 }

 interface PublicThemeAPI {
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/dto/AdminThemeFindDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/dto/AdminThemeFindDTO.kt
@ -0,0 +1,31 @@
+package com.sangdol.roomescape.theme.dto
+
+import com.sangdol.roomescape.common.types.AuditingInfo
+import com.sangdol.roomescape.theme.infrastructure.persistence.Difficulty
+
+data class ThemeSummaryResponse(
+    val id: Long,
+    val name: String,
+    val difficulty: Difficulty,
+    val price: Int,
+    val isActive: Boolean
+)
+
+data class ThemeSummaryListResponse(
+    val themes: List<ThemeSummaryResponse>
+)
+
+data class ThemeDetailResponse(
+    val theme: ThemeInfoResponse,
+    val isActive: Boolean,
+    val audit: AuditingInfo
+)
+
+data class ThemeNameResponse(
+    val id: Long,
+    val name: String
+)
+
+data class ThemeNameListResponse(
+    val themes: List<ThemeNameResponse>
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/dto/AdminThemeWriteDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/dto/AdminThemeWriteDTO.kt
@ -0,0 +1,49 @@
+package com.sangdol.roomescape.theme.dto
+
+import com.sangdol.roomescape.theme.infrastructure.persistence.Difficulty
+
+data class ThemeCreateRequest(
+    val name: String,
+    val description: String,
+    val thumbnailUrl: String,
+    val difficulty: Difficulty,
+    val price: Int,
+    val minParticipants: Short,
+    val maxParticipants: Short,
+    val availableMinutes: Short,
+    val expectedMinutesFrom: Short,
+    val expectedMinutesTo: Short,
+    val isActive: Boolean
+)
+
+data class ThemeCreateResponse(
+    val id: Long
+)
+
+data class ThemeUpdateRequest(
+    val name: String? = null,
+    val description: String? = null,
+    val thumbnailUrl: String? = null,
+    val difficulty: Difficulty? = null,
+    val price: Int? = null,
+    val minParticipants: Short? = null,
+    val maxParticipants: Short? = null,
+    val availableMinutes: Short? = null,
+    val expectedMinutesFrom: Short? = null,
+    val expectedMinutesTo: Short? = null,
+    val isActive: Boolean? = null,
+) {
+    fun isAllParamsNull(): Boolean {
+        return name == null &&
+                description == null &&
+                thumbnailUrl == null &&
+                difficulty == null &&
+                price == null &&
+                minParticipants == null &&
+                maxParticipants == null &&
+                availableMinutes == null &&
+                expectedMinutesFrom == null &&
+                expectedMinutesTo == null &&
+                isActive == null
+    }
+}
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/dto/ThemeFindDTO.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/dto/ThemeFindDTO.kt
@ -0,0 +1,19 @@
+package com.sangdol.roomescape.theme.dto
+
+data class ThemeInfoResponse(
+    val id: Long,
+    val name: String,
+    val thumbnailUrl: String,
+    val description: String,
+    val difficulty: String,
+    val price: Int,
+    val minParticipants: Short,
+    val maxParticipants: Short,
+    val availableMinutes: Short,
+    val expectedMinutesFrom: Short,
+    val expectedMinutesTo: Short
+)
+
+data class ThemeInfoListResponse(
+    val themes: List<ThemeInfoResponse>
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/infrastructure/persistence/ThemeRepository.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/infrastructure/persistence/ThemeRepository.kt
@ -32,10 +32,9 @@ interface ThemeRepository : JpaRepository<ThemeEntity, Long> {
                    AND (s.date BETWEEN :startFrom AND :endAt)
                GROUP BY 
                    s.theme_id  
-                ORDER BY 
-                    reservation_count desc 
                LIMIT :count
            ) ranked_themes ON t.id = ranked_themes.theme_id
+            ORDER BY ranked_themes.reservation_count DESC, t.id ASC
        """,
        nativeQuery = true
    )
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/mapper/AdminThemeMappingExtensions.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/mapper/AdminThemeMappingExtensions.kt
@ -0,0 +1,48 @@
+package com.sangdol.roomescape.theme.mapper
+
+import com.sangdol.roomescape.common.types.AuditingInfo
+import com.sangdol.roomescape.theme.dto.*
+import com.sangdol.roomescape.theme.infrastructure.persistence.ThemeEntity
+
+fun ThemeCreateRequest.toEntity(id: Long) = ThemeEntity(
+    id = id,
+    name = this.name,
+    description = this.description,
+    thumbnailUrl = this.thumbnailUrl,
+    difficulty = this.difficulty,
+    price = this.price,
+    minParticipants = this.minParticipants,
+    maxParticipants = this.maxParticipants,
+    availableMinutes = this.availableMinutes,
+    expectedMinutesFrom = this.expectedMinutesFrom,
+    expectedMinutesTo = this.expectedMinutesTo,
+    isActive = this.isActive
+)
+
+fun ThemeEntity.toSummaryResponse() = ThemeSummaryResponse(
+    id = this.id,
+    name = this.name,
+    difficulty = this.difficulty,
+    price = this.price,
+    isActive = this.isActive
+)
+
+fun ThemeEntity.toDetailResponse(audit: AuditingInfo) =
+    ThemeDetailResponse(
+        theme = this.toInfoResponse(),
+        isActive = this.isActive,
+        audit = audit
+    )
+
+fun ThemeEntity.toNameResponse() = ThemeNameResponse(
+    id = this.id,
+    name = this.name
+)
+
+fun List<ThemeEntity>.toSummaryListResponse() = ThemeSummaryListResponse(
+    themes = this.map { it.toSummaryResponse() }
+)
+
+fun List<ThemeEntity>.toNameListResponse() = ThemeNameListResponse(
+    themes = this.map { it.toNameResponse() }
+)
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/mapper/UserThemeMappingExtensions.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/mapper/UserThemeMappingExtensions.kt
@ -1,23 +1,11 @@
-package com.sangdol.roomescape.theme.web
+package com.sangdol.roomescape.theme.mapper

 import com.sangdol.roomescape.theme.business.domain.ThemeInfo
+import com.sangdol.roomescape.theme.dto.ThemeInfoListResponse
+import com.sangdol.roomescape.theme.dto.ThemeInfoResponse
 import com.sangdol.roomescape.theme.infrastructure.persistence.ThemeEntity

-data class ThemeInfoResponse(
-    val id: Long,
-    val name: String,
-    val thumbnailUrl: String,
-    val description: String,
-    val difficulty: String,
-    val price: Int,
-    val minParticipants: Short,
-    val maxParticipants: Short,
-    val availableMinutes: Short,
-    val expectedMinutesFrom: Short,
-    val expectedMinutesTo: Short
-)
-
-fun ThemeInfo.toInfoResponse() = ThemeInfoResponse(
+fun ThemeInfo.toResponse() = ThemeInfoResponse(
    id = this.id,
    name = this.name,
    thumbnailUrl = this.thumbnailUrl,
@ -45,10 +33,8 @@ fun ThemeEntity.toInfoResponse() = ThemeInfoResponse(
    expectedMinutesTo = this.expectedMinutesTo
 )

-data class ThemeInfoListResponse(
-    val themes: List<ThemeInfoResponse>
+fun List<ThemeInfo>.toListResponse() = ThemeInfoListResponse(
+    themes = this.map { it.toResponse() }
 )

-fun List<ThemeInfo>.toListResponse() = ThemeInfoListResponse(
-    themes = this.map { it.toInfoResponse() }
-)
+
--- a/service/src/main/kotlin/com/sangdol/roomescape/theme/web/AdminThemeController.kt
+++ b/service/src/main/kotlin/com/sangdol/roomescape/theme/web/AdminThemeController.kt
@ -1,8 +1,9 @@
 package com.sangdol.roomescape.theme.web

 import com.sangdol.common.types.web.CommonApiResponse
-import com.sangdol.roomescape.theme.business.ThemeService
+import com.sangdol.roomescape.theme.business.AdminThemeService
 import com.sangdol.roomescape.theme.docs.AdminThemeAPI
+import com.sangdol.roomescape.theme.dto.*
 import jakarta.validation.Valid
 import org.springframework.http.ResponseEntity
 import org.springframework.web.bind.annotation.*
@ -10,19 +11,19 @@ import java.net.URI

@RestController
 class AdminThemeController(
-    private val themeService: ThemeService,
+    private val adminThemeService: AdminThemeService,
 ) : AdminThemeAPI {

    @GetMapping("/admin/themes")
-    override fun getAdminThemeSummaries(): ResponseEntity<CommonApiResponse<AdminThemeSummaryListResponse>> {
-        val response = themeService.findAdminThemes()
+    override fun getAdminThemeSummaries(): ResponseEntity<CommonApiResponse<ThemeSummaryListResponse>> {
+        val response = adminThemeService.findThemeSummaries()

        return ResponseEntity.ok(CommonApiResponse(response))
    }

    @GetMapping("/admin/themes/{id}")
-    override fun findAdminThemeDetail(@PathVariable id: Long): ResponseEntity<CommonApiResponse<AdminThemeDetailResponse>> {
-        val response = themeService.findAdminThemeDetail(id)
+    override fun findAdminThemeDetail(@PathVariable id: Long): ResponseEntity<CommonApiResponse<ThemeDetailResponse>> {
+        val response = adminThemeService.findThemeDetail(id)

        return ResponseEntity.ok(CommonApiResponse(response))
    }
@ -31,7 +32,7 @@ class AdminThemeController(
    override fun createTheme(
        @Valid @RequestBody themeCreateRequest: ThemeCreateRequest
    ): ResponseEntity<CommonApiResponse<ThemeCreateResponse>> {
-        val response = themeService.createTheme(themeCreateRequest)
+        val response = adminThemeService.createTheme(themeCreateRequest)

        return ResponseEntity.created(URI.create("/admin/themes/${response.id}"))
            .body(CommonApiResponse(response))
@ -39,7 +40,7 @@ class AdminThemeController(

    @DeleteMapping("/admin/themes/{id}")
    override fun deleteTheme(@PathVariable id: Long): ResponseEntity<CommonApiResponse<Unit>> {
-        themeService.deleteTheme(id)
+        adminThemeService.deleteTheme(id)

        return ResponseEntity.noContent().build()
    }
@ -49,14 +50,14 @@ class AdminThemeController(
        @PathVariable id: Long,
        @Valid @RequestBody request: ThemeUpdateRequest
    ): ResponseEntity<CommonApiResponse<Unit>> {
-        themeService.updateTheme(id, request)
+        adminThemeService.updateTheme(id, request)

        return ResponseEntity.ok().build()
    }

    @GetMapping("/admin/themes/active")
-    override fun getActiveThemes(): ResponseEntity<CommonApiResponse<SimpleActiveThemeListResponse>> {
-        val response = themeService.findActiveThemes()
+    override fun getActiveThemes(): ResponseEntity<CommonApiResponse<ThemeNameListResponse>> {
+        val response = adminThemeService.findActiveThemes()

        return ResponseEntity.ok(CommonApiResponse(response))
    }
--- a/Show More
+++ b/Show More