diff --git a/ARCHITECTURE.md b/ARCHITECTURE.md
new file mode 100644
index 0000000..fda6e3e
--- /dev/null
+++ b/ARCHITECTURE.md
@@ -0,0 +1,170 @@
+# Payper Server Architecture
+
+이 문서는 코드베이스에 적용된 아키텍처 규칙을 정리합니다.
+규칙은 ArchUnit 테스트로 자동 검증됩니다 (`./gradlew test`).
+
+---
+
+## 패키지 구조 (최종 버전)
+
+```
+com.payper.server
+├── {domain}/
+│   ├── controller/     ← REST 엔드포인트 + Swagger Api 인터페이스
+│   ├── service/        ← 비즈니스 로직
+│   ├── repository/     ← JPA Repository
+│   ├── entity/         ← JPA 엔티티
+│   └── dto/
+│       ├── request/
+│       └── response/
+├── global/             ← 공통 (응답 래퍼, 예외, 에러 코드)
+└── security/           ← Spring Security 설정 및 필터
+```
+
+---
+
+## 계층 구조 및 의존 방향
+
+```
+Controller  →  Service  →  Repository
+```
+
+- 의존은 **단방향**. 역방향 참조 금지.
+
+---
+
+## 계층별 규칙
+
+### Controller
+
+| 규칙 | 내용 |
+|------|------|
+| 패키지 위치 | `controller` 패키지에만 위치해야 한다 |
+| 어노테이션 | `@RestController`가 선언되어야 한다 |
+| Service 의존 | 반드시 하나 이상의 `@Service` 클래스에 의존해야 한다 |
+| Repository 격리 | `repository` 패키지에 직접 의존하면 안 된다 |
+| Swagger 명세 | 이름이 `Api`로 끝나는 인터페이스를 구현해야 한다 |
+
+> `domain.test` 패키지의 개발용 컨트롤러는 위 규칙에서 제외된다.
+
+**명명 예시**
+```
+PostController, CommentController
+```
+
+---
+
+### Service
+
+| 규칙 | 내용 |
+|------|------|
+| 패키지 위치 | `service` 패키지에만 위치해야 한다 |
+| 어노테이션 | `service` 패키지 내 구체 클래스는 `@Service`가 선언되어야 한다 |
+| Controller 격리 | `controller` 패키지를 참조하면 안 된다 |
+
+> interface가 있을 수 있으므로 이름 규칙은 강제하지 않는다. `PostService`, `PostServiceImpl` 등 자유롭게 사용할 수 있다.
+
+**명명 예시**
+```
+PostService, CommentServiceImpl
+```
+
+---
+
+### Repository
+
+| 규칙 | 내용 |
+|------|------|
+| 패키지 위치 | `repository` 패키지에만 위치해야 한다 |
+| 계층 격리 | `service`, `controller` 패키지를 참조하면 안 된다 |
+
+> 커스텀이 있을 수 있으므로 이름 규칙은 강제하지 않는다. `PostRepository`, `PostRepositoryCustomImpl`, `PostRepositoryCustom` 등 자유롭게 사용할 수 있다.
+
+**명명 예시**
+```
+PostRepository, PostRepositoryCustomImpl, PostRepositoryCustom
+```
+
+---
+
+### Entity
+
+| 규칙 | 내용 |
+|------|------|
+| 어노테이션 | `entity` 패키지의 enum·`BaseTimeEntity` 이외 클래스는 `@Entity`가 선언되어야 한다 |
+| 계층 격리 | `service`, `controller` 패키지를 의존하면 안 된다 |
+
+---
+
+### DTO
+
+| 규칙 | 내용 |
+|------|------|
+| 패키지 위치 | 이름이 `Request` 또는 `Response`로 끝나는 클래스는 `dto` 패키지에 위치해야 한다 |
+
+> `global` 패키지의 공통 응답 래퍼(`ApiResponse` 등)는 제외된다.
+
+---
+
+### Swagger Api 인터페이스
+
+| 규칙 | 내용 |
+|------|------|
+| 타입 | 인터페이스여야 한다 |
+| 어노테이션 | `@Tag`가 선언되어야 한다 |
+| 패키지 위치 | `controller` 패키지에 위치해야 한다 |
+
+**명명 규칙**: `{Domain}Api` 형태로 이름이 `Api`로 끝나야 한다.
+
+```java
+// 올바른 예
+@Tag(name = "게시글", description = "...")
+public interface PostApi { ... }
+
+// PostController는 PostApi를 구현해야 한다
+@RestController
+public class PostController implements PostApi { ... }
+```
+
+---
+
+## 공통 규칙
+
+### 의존성 주입 (DI)
+
+| 규칙 | 내용 |
+|------|------|
+| 주입 방식 | `@Autowired` 필드 주입 금지. 생성자 주입만 허용 |
+| 필드 선언 | `service`, `controller` 계층의 인스턴스 필드는 `final`이어야 한다 |
+| Lombok | `service`, `controller` 계층의 구체 클래스는 `@RequiredArgsConstructor`를 사용해야 한다 |
+
+```java
+// 올바른 예
+@Service
+@RequiredArgsConstructor
+public class PostService {
+    private final PostRepository postRepository;
+}
+
+// 잘못된 예
+@Autowired
+private PostRepository postRepository;
+```
+
+### global 패키지 독립성
+
+`global` 패키지는 도메인 패키지에 의존하면 안 된다.
+
+---
+
+## ArchUnit 테스트 파일 목록
+
+| 파일 | 검증 대상 |
+|------|----------|
+| `GlobalArchitectureTest` | 계층 방향성, global 독립성, DI 방식 |
+| `ControllerArchitectureTest` | Controller 계층 전반 |
+| `ServiceArchitectureTest` | Service 계층 전반 |
+| `RepositoryArchitectureTest` | Repository 계층 전반 |
+| `EntityArchitectureTest` | Entity 어노테이션, 계층 격리 |
+| `DtoArchitectureTest` | DTO 패키지 위치 |
+| `SwaggerArchitectureTest` | Api 인터페이스 타입, 어노테이션, 위치 |
diff --git a/build.gradle b/build.gradle
index 031666b..8cbeb6d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -32,6 +32,8 @@ dependencies {
 	// lombok
 	compileOnly 'org.projectlombok:lombok'
 	annotationProcessor 'org.projectlombok:lombok'
+	testCompileOnly 'org.projectlombok:lombok'
+	testAnnotationProcessor 'org.projectlombok:lombok'
 
 	// data
 	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
@@ -52,6 +54,9 @@ dependencies {
 	testImplementation 'org.springframework.boot:spring-boot-starter-webmvc-test'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 	testImplementation 'com.h2database:h2'
+
+    // Archunit
+    testImplementation 'com.tngtech.archunit:archunit-junit5:1.4.1'
 }
 
 spotless {
diff --git a/src/main/java/com/payper/server/auth/AuthApi.java b/src/main/java/com/payper/server/auth/controller/AuthApi.java
similarity index 97%
rename from src/main/java/com/payper/server/auth/AuthApi.java
rename to src/main/java/com/payper/server/auth/controller/AuthApi.java
index 17d8f23..b787ff9 100644
--- a/src/main/java/com/payper/server/auth/AuthApi.java
+++ b/src/main/java/com/payper/server/auth/controller/AuthApi.java
@@ -1,4 +1,4 @@
-package com.payper.server.auth;
+package com.payper.server.auth.controller;
 
 import com.payper.server.auth.dto.request.LoginRequest;
 import com.payper.server.auth.dto.response.LoginSuccessResponse;
diff --git a/src/main/java/com/payper/server/auth/AuthController.java b/src/main/java/com/payper/server/auth/controller/AuthController.java
similarity index 95%
rename from src/main/java/com/payper/server/auth/AuthController.java
rename to src/main/java/com/payper/server/auth/controller/AuthController.java
index e3c27c4..75b427e 100644
--- a/src/main/java/com/payper/server/auth/AuthController.java
+++ b/src/main/java/com/payper/server/auth/controller/AuthController.java
@@ -1,8 +1,9 @@
-package com.payper.server.auth;
+package com.payper.server.auth.controller;
 
 import com.payper.server.auth.dto.request.LoginRequest;
 import com.payper.server.auth.dto.response.LoginSuccessResponse;
 import com.payper.server.auth.dto.response.ReissueSuccessResponse;
+import com.payper.server.auth.service.AuthService;
 import com.payper.server.auth.util.OAuthUserInfo;
 import com.payper.server.global.response.ApiResponse;
 import com.payper.server.user.entity.AuthType;
diff --git a/src/main/java/com/payper/server/auth/jwt/RefreshTokenRepository.java b/src/main/java/com/payper/server/auth/jwt/repository/RefreshTokenRepository.java
similarity index 93%
rename from src/main/java/com/payper/server/auth/jwt/RefreshTokenRepository.java
rename to src/main/java/com/payper/server/auth/jwt/repository/RefreshTokenRepository.java
index 19116bb..782e072 100644
--- a/src/main/java/com/payper/server/auth/jwt/RefreshTokenRepository.java
+++ b/src/main/java/com/payper/server/auth/jwt/repository/RefreshTokenRepository.java
@@ -1,4 +1,4 @@
-package com.payper.server.auth.jwt;
+package com.payper.server.auth.jwt.repository;
 
 import com.payper.server.auth.jwt.entity.RefreshTokenEntity;
 import java.util.Optional;
diff --git a/src/main/java/com/payper/server/auth/jwt/util/JwtParseUtil.java b/src/main/java/com/payper/server/auth/jwt/util/JwtParseUtil.java
index 5972e00..bb37789 100644
--- a/src/main/java/com/payper/server/auth/jwt/util/JwtParseUtil.java
+++ b/src/main/java/com/payper/server/auth/jwt/util/JwtParseUtil.java
@@ -1,7 +1,7 @@
 package com.payper.server.auth.jwt.util;
 
-import com.payper.server.auth.AuthException;
 import com.payper.server.auth.jwt.entity.JwtType;
+import com.payper.server.global.exception.AuthException;
 import com.payper.server.global.response.ErrorCode;
 import io.jsonwebtoken.*;
 import io.jsonwebtoken.security.SignatureException;
diff --git a/src/main/java/com/payper/server/auth/jwt/util/JwtRefreshTokenUtil.java b/src/main/java/com/payper/server/auth/jwt/util/JwtRefreshTokenUtil.java
index 47295bc..582df2d 100644
--- a/src/main/java/com/payper/server/auth/jwt/util/JwtRefreshTokenUtil.java
+++ b/src/main/java/com/payper/server/auth/jwt/util/JwtRefreshTokenUtil.java
@@ -1,7 +1,7 @@
 package com.payper.server.auth.jwt.util;
 
-import com.payper.server.auth.jwt.RefreshTokenRepository;
 import com.payper.server.auth.jwt.entity.RefreshTokenEntity;
+import com.payper.server.auth.jwt.repository.RefreshTokenRepository;
 import io.jsonwebtoken.Jwts;
 import jakarta.annotation.PostConstruct;
 import jakarta.servlet.http.Cookie;
diff --git a/src/main/java/com/payper/server/auth/AuthService.java b/src/main/java/com/payper/server/auth/service/AuthService.java
similarity index 97%
rename from src/main/java/com/payper/server/auth/AuthService.java
rename to src/main/java/com/payper/server/auth/service/AuthService.java
index 08bfe38..69481a7 100644
--- a/src/main/java/com/payper/server/auth/AuthService.java
+++ b/src/main/java/com/payper/server/auth/service/AuthService.java
@@ -1,4 +1,4 @@
-package com.payper.server.auth;
+package com.payper.server.auth.service;
 
 import com.payper.server.auth.jwt.entity.JwtType;
 import com.payper.server.auth.jwt.entity.RefreshTokenEntity;
@@ -8,11 +8,12 @@
 import com.payper.server.auth.util.KakaoOAuthUtilImpl;
 import com.payper.server.auth.util.OAuthUserInfo;
 import com.payper.server.global.exception.ApiException;
+import com.payper.server.global.exception.AuthException;
 import com.payper.server.global.response.ErrorCode;
-import com.payper.server.user.UserService;
 import com.payper.server.user.entity.AuthType;
 import com.payper.server.user.entity.User;
 import com.payper.server.user.entity.UserRole;
+import com.payper.server.user.service.UserService;
 import jakarta.servlet.http.HttpServletResponse;
 import java.util.Date;
 import java.util.Optional;
diff --git a/src/main/java/com/payper/server/auth/util/AuthDummyInit.java b/src/main/java/com/payper/server/auth/util/AuthDummyInit.java
index a7eac85..a18fdd4 100644
--- a/src/main/java/com/payper/server/auth/util/AuthDummyInit.java
+++ b/src/main/java/com/payper/server/auth/util/AuthDummyInit.java
@@ -1,6 +1,6 @@
 package com.payper.server.auth.util;
 
-import com.payper.server.auth.AuthService;
+import com.payper.server.auth.service.AuthService;
 import com.payper.server.user.entity.AuthType;
 import com.payper.server.user.entity.User;
 import jakarta.servlet.*;
diff --git a/src/main/java/com/payper/server/auth/AuthException.java b/src/main/java/com/payper/server/global/exception/AuthException.java
similarity index 89%
rename from src/main/java/com/payper/server/auth/AuthException.java
rename to src/main/java/com/payper/server/global/exception/AuthException.java
index 09d5a34..ce304a8 100644
--- a/src/main/java/com/payper/server/auth/AuthException.java
+++ b/src/main/java/com/payper/server/global/exception/AuthException.java
@@ -1,4 +1,4 @@
-package com.payper.server.auth;
+package com.payper.server.global.exception;
 
 import com.payper.server.global.response.ErrorCode;
 import lombok.Getter;
diff --git a/src/main/java/com/payper/server/global/exception/GlobalExceptionHandler.java b/src/main/java/com/payper/server/global/exception/GlobalExceptionHandler.java
index 6f23273..54511e1 100644
--- a/src/main/java/com/payper/server/global/exception/GlobalExceptionHandler.java
+++ b/src/main/java/com/payper/server/global/exception/GlobalExceptionHandler.java
@@ -1,6 +1,5 @@
 package com.payper.server.global.exception;
 
-import com.payper.server.auth.AuthException;
 import com.payper.server.global.response.ApiResponse;
 import com.payper.server.global.response.ErrorCode;
 import com.payper.server.global.response.FieldErrorDto;
diff --git a/src/main/java/com/payper/server/security/CustomAuthenticationEntryPoint.java b/src/main/java/com/payper/server/security/CustomAuthenticationEntryPoint.java
index 7788b15..2496a6b 100644
--- a/src/main/java/com/payper/server/security/CustomAuthenticationEntryPoint.java
+++ b/src/main/java/com/payper/server/security/CustomAuthenticationEntryPoint.java
@@ -1,6 +1,6 @@
 package com.payper.server.security;
 
-import com.payper.server.auth.AuthException;
+import com.payper.server.global.exception.AuthException;
 import com.payper.server.global.response.ApiResponse;
 import com.payper.server.global.response.ErrorCode;
 import jakarta.servlet.ServletException;
diff --git a/src/main/java/com/payper/server/security/CustomUserDetailsService.java b/src/main/java/com/payper/server/security/CustomUserDetailsService.java
index 9595a0f..8dc624f 100644
--- a/src/main/java/com/payper/server/security/CustomUserDetailsService.java
+++ b/src/main/java/com/payper/server/security/CustomUserDetailsService.java
@@ -1,6 +1,6 @@
 package com.payper.server.security;
 
-import com.payper.server.auth.AuthException;
+import com.payper.server.global.exception.AuthException;
 import com.payper.server.global.response.ErrorCode;
 import com.payper.server.user.entity.User;
 import com.payper.server.user.repository.UserRepository;
diff --git a/src/main/java/com/payper/server/security/JwtAuthenticationProvider.java b/src/main/java/com/payper/server/security/JwtAuthenticationProvider.java
index 493e2c7..ddb3c4d 100644
--- a/src/main/java/com/payper/server/security/JwtAuthenticationProvider.java
+++ b/src/main/java/com/payper/server/security/JwtAuthenticationProvider.java
@@ -1,8 +1,8 @@
 package com.payper.server.security;
 
-import com.payper.server.auth.AuthException;
 import com.payper.server.auth.jwt.entity.JwtType;
 import com.payper.server.auth.jwt.util.JwtParseUtil;
+import com.payper.server.global.exception.AuthException;
 import com.payper.server.global.response.ErrorCode;
 import jakarta.annotation.Nullable;
 import lombok.RequiredArgsConstructor;
diff --git a/src/main/java/com/payper/server/user/UserService.java b/src/main/java/com/payper/server/user/service/UserService.java
similarity index 94%
rename from src/main/java/com/payper/server/user/UserService.java
rename to src/main/java/com/payper/server/user/service/UserService.java
index 251dc7a..866c839 100644
--- a/src/main/java/com/payper/server/user/UserService.java
+++ b/src/main/java/com/payper/server/user/service/UserService.java
@@ -1,7 +1,7 @@
-package com.payper.server.user;
+package com.payper.server.user.service;
 
-import com.payper.server.auth.AuthException;
 import com.payper.server.auth.util.OAuthUserInfo;
+import com.payper.server.global.exception.AuthException;
 import com.payper.server.global.response.ErrorCode;
 import com.payper.server.user.entity.User;
 import com.payper.server.user.repository.UserRepository;
diff --git a/src/test/java/com/payper/server/ControllerArchitectureTest.java b/src/test/java/com/payper/server/ControllerArchitectureTest.java
new file mode 100644
index 0000000..9cf5a77
--- /dev/null
+++ b/src/test/java/com/payper/server/ControllerArchitectureTest.java
@@ -0,0 +1,73 @@
+package com.payper.server;
+
+import static com.tngtech.archunit.core.domain.JavaClass.Predicates.simpleNameEndingWith;
+import static com.tngtech.archunit.lang.conditions.ArchConditions.implement;
+import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.*;
+
+import com.tngtech.archunit.core.importer.ImportOption;
+import com.tngtech.archunit.junit.AnalyzeClasses;
+import com.tngtech.archunit.junit.ArchTest;
+import com.tngtech.archunit.lang.ArchRule;
+import org.springframework.stereotype.Service;
+import org.springframework.web.bind.annotation.RestController;
+
+/** 컨트롤러 아키텍처 규칙 검증 테스트 */
+@AnalyzeClasses(
+        packages = "com.payper.server",
+        importOptions = {ImportOption.DoNotIncludeTests.class} // test 패키지의 테스트 클래스들은 제외
+        )
+class ControllerArchitectureTest {
+
+    private static final String CONTROLLER_PKG = "..controller..";
+    private static final String REPOSITORY_PKG = "..repository..";
+
+    /** 개발/테스트용 임시 컨트롤러 패키지 - 계층 규칙 적용 제외 */
+    private static final String TEST_UTIL_PKG = "com.payper.server.domain.test..";
+
+    /** @RestController 어노테이션이 선언되어야 한다. */
+    @ArchTest
+    static ArchRule controllerMustBeAnnotatedWithRestController =
+            classes().that().haveSimpleNameEndingWith("Controller").should().beAnnotatedWith(RestController.class);
+
+    /** Repository에 의존하면 안 된다. */
+    @ArchTest
+    static ArchRule controllerMustNotDependOnRepository = noClasses()
+            .that()
+            .resideInAPackage(CONTROLLER_PKG)
+            .should()
+            .dependOnClassesThat()
+            .resideInAPackage(REPOSITORY_PKG);
+
+    /** 반드시 Service에 의존해야 한다. */
+    @ArchTest
+    static ArchRule controllerMustDependOnService = classes()
+            .that()
+            .areAnnotatedWith(RestController.class)
+            .and()
+            .resideOutsideOfPackage(TEST_UTIL_PKG)
+            .should()
+            .dependOnClassesThat()
+            .areAnnotatedWith(Service.class);
+
+    /**
+     * Controller는 Swagger Api 인터페이스를 구현해야 한다. <br>
+     * API 문서화를 강제하여 모든 Controller가 명세서를 가지도록 한다.
+     */
+    @ArchTest
+    static ArchRule controllerMustImplementApiInterface = classes()
+            .that()
+            .areAnnotatedWith(RestController.class)
+            .and()
+            .resideOutsideOfPackage(TEST_UTIL_PKG)
+            .should(implement(simpleNameEndingWith("Api")));
+
+    /** controller 패키지에만 있어야 한다. */
+    @ArchTest
+    static ArchRule controllerMustResideInControllerPackage = classes()
+            .that()
+            .haveSimpleNameEndingWith("Controller")
+            .and()
+            .resideOutsideOfPackage(TEST_UTIL_PKG)
+            .should()
+            .resideInAPackage(CONTROLLER_PKG);
+}
diff --git a/src/test/java/com/payper/server/DtoArchitectureTest.java b/src/test/java/com/payper/server/DtoArchitectureTest.java
new file mode 100644
index 0000000..9f811a1
--- /dev/null
+++ b/src/test/java/com/payper/server/DtoArchitectureTest.java
@@ -0,0 +1,30 @@
+package com.payper.server;
+
+import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.classes;
+
+import com.tngtech.archunit.core.importer.ImportOption;
+import com.tngtech.archunit.junit.AnalyzeClasses;
+import com.tngtech.archunit.junit.ArchTest;
+import com.tngtech.archunit.lang.ArchRule;
+
+/** DTO 아키텍처 규칙 검증 테스트 */
+@AnalyzeClasses(
+        packages = "com.payper.server",
+        importOptions = {ImportOption.DoNotIncludeTests.class} // test 패키지의 테스트 클래스들은 제외
+        )
+class DtoArchitectureTest {
+
+    private static final String DTO_PKG = "..dto..";
+
+    /** dto 패키지에 위치해야 한다. */
+    @ArchTest
+    static ArchRule dtoMustResideInDtoPackage = classes()
+            .that()
+            .haveSimpleNameEndingWith("Request")
+            .or()
+            .haveSimpleNameEndingWith("Response")
+            .and()
+            .resideOutsideOfPackage("com.payper.server.global..") // TODO: domain 이동 후 변경
+            .should()
+            .resideInAPackage(DTO_PKG);
+}
diff --git a/src/test/java/com/payper/server/EntityArchitectureTest.java b/src/test/java/com/payper/server/EntityArchitectureTest.java
new file mode 100644
index 0000000..decf52f
--- /dev/null
+++ b/src/test/java/com/payper/server/EntityArchitectureTest.java
@@ -0,0 +1,45 @@
+package com.payper.server;
+
+import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.*;
+
+import com.tngtech.archunit.core.importer.ImportOption;
+import com.tngtech.archunit.junit.AnalyzeClasses;
+import com.tngtech.archunit.junit.ArchTest;
+import com.tngtech.archunit.lang.ArchRule;
+import jakarta.persistence.Entity;
+import jakarta.persistence.MappedSuperclass;
+
+/** Entity 아키텍처 규칙 검증 테스트 */
+@AnalyzeClasses(
+        packages = "com.payper.server",
+        importOptions = {ImportOption.DoNotIncludeTests.class} // test 패키지의 테스트 클래스들은 제외
+        )
+class EntityArchitectureTest {
+
+    private static final String CONTROLLER_PKG = "..controller..";
+    private static final String SERVICE_PKG = "..service..";
+    private static final String ENTITY_PKG = "..entity..";
+
+    /** @Entity 어노테이션이 선언되어야 한다. */
+    @ArchTest
+    static ArchRule entityClassMustHaveEntityAnnotation = classes()
+            .that()
+            .resideInAPackage(ENTITY_PKG)
+            .and()
+            .areNotEnums()
+            .and()
+            .areNotAnnotatedWith(MappedSuperclass.class)
+            .and()
+            .areTopLevelClasses()
+            .should()
+            .beAnnotatedWith(Entity.class);
+
+    /** Service 또는 Controller 계층을 의존하면 안 된다. */
+    @ArchTest
+    static ArchRule entityMustNotDependOnServiceOrController = noClasses()
+            .that()
+            .resideInAPackage(ENTITY_PKG)
+            .should()
+            .dependOnClassesThat()
+            .resideInAnyPackage(SERVICE_PKG, CONTROLLER_PKG);
+}
diff --git a/src/test/java/com/payper/server/GlobalArchitectureTest.java b/src/test/java/com/payper/server/GlobalArchitectureTest.java
new file mode 100644
index 0000000..d56f43b
--- /dev/null
+++ b/src/test/java/com/payper/server/GlobalArchitectureTest.java
@@ -0,0 +1,87 @@
+package com.payper.server;
+
+import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.*;
+import static com.tngtech.archunit.library.Architectures.layeredArchitecture;
+
+import com.tngtech.archunit.core.importer.ImportOption;
+import com.tngtech.archunit.junit.AnalyzeClasses;
+import com.tngtech.archunit.junit.ArchTest;
+import com.tngtech.archunit.lang.ArchRule;
+import com.tngtech.archunit.library.Architectures;
+import org.springframework.beans.factory.annotation.Autowired;
+
+/**
+ * 공통 아키텍처 규칙 검증 테스트
+ *
+ * <p>특정 계층에 국한되지 않는 전역 규칙을 검증한다.
+ *
+ * <ul>
+ *   <li>계층 간 순방향 의존 흐름
+ *   <li>global 패키지 독립성
+ *   <li>DI 방식 (생성자 주입, final 필드)
+ * </ul>
+ */
+@AnalyzeClasses(
+        packages = "com.payper.server",
+        importOptions = {ImportOption.DoNotIncludeTests.class} // test 패키지의 테스트 클래스들은 제외
+        )
+class GlobalArchitectureTest {
+
+    private static final String CONTROLLER_PKG = "..controller..";
+    private static final String SERVICE_PKG = "..service..";
+    private static final String REPOSITORY_PKG = "..repository..";
+
+    private static final String CONTROLLER_LAYER = "Controller";
+    private static final String SERVICE_LAYER = "Service";
+    private static final String REPOSITORY_LAYER = "Repository";
+
+    /** 계층 간 의존 흐름은 Controller → Service → Repository 순방향이어야 한다. */
+    @ArchTest
+    static Architectures.LayeredArchitecture layeredArchitectureMustBeRespected = layeredArchitecture()
+            .consideringOnlyDependenciesInLayers()
+            .layer(CONTROLLER_LAYER)
+            .definedBy(CONTROLLER_PKG)
+            .layer(SERVICE_LAYER)
+            .definedBy(SERVICE_PKG)
+            .layer(REPOSITORY_LAYER)
+            .definedBy(REPOSITORY_PKG)
+            .whereLayer(CONTROLLER_LAYER)
+            .mayNotBeAccessedByAnyLayer()
+            .whereLayer(SERVICE_LAYER)
+            .mayOnlyBeAccessedByLayers(CONTROLLER_LAYER)
+            .whereLayer(REPOSITORY_LAYER)
+            .mayOnlyBeAccessedByLayers(SERVICE_LAYER);
+
+    /** global 패키지는 다른 도메인 패키지에 의존하면 안 된다. */
+    @ArchTest
+    static ArchRule globalPackageMustNotDependOnDomainPackages = noClasses()
+            .that()
+            .resideInAPackage("com.payper.server.global..")
+            // .should().dependOnClassesThat().resideInAPackage(".domain..") TODO: domain 디렉토리 안으로 이동 후 적용
+            .should()
+            .dependOnClassesThat()
+            .resideInAnyPackage(
+                    "com.payper.server.auth..",
+                    "com.payper.server.user..",
+                    "com.payper.server.post..",
+                    "com.payper.server.comment..",
+                    "com.payper.server.merchant..",
+                    "com.payper.server.favorite..");
+
+    /**
+     * @Autowired 필드 주입은 사용하면 안 된다. <br>
+     * 생성자 주입 또는 명시적 생성자만 허용한다.
+     */
+    @ArchTest
+    static ArchRule noFieldInjectionWithAutowired = noFields().should().beAnnotatedWith(Autowired.class);
+
+    /** Service, Controller의 non-static 필드는 final이어야 한다. */
+    @ArchTest
+    static final ArchRule componentsMustHaveOnlyFinalFields = fields().that()
+            .areDeclaredInClassesThat()
+            .resideInAnyPackage(SERVICE_PKG, CONTROLLER_PKG)
+            .and()
+            .areNotStatic()
+            .should()
+            .beFinal();
+}
diff --git a/src/test/java/com/payper/server/JwtModulesSpringBootIntegrationTest.java b/src/test/java/com/payper/server/JwtModulesSpringBootIntegrationTest.java
index 04f79d9..8f44807 100644
--- a/src/test/java/com/payper/server/JwtModulesSpringBootIntegrationTest.java
+++ b/src/test/java/com/payper/server/JwtModulesSpringBootIntegrationTest.java
@@ -2,14 +2,14 @@
 
 import static org.assertj.core.api.Assertions.*;
 
-import com.payper.server.auth.AuthException;
-import com.payper.server.auth.jwt.RefreshTokenRepository;
 import com.payper.server.auth.jwt.entity.JwtType;
 import com.payper.server.auth.jwt.entity.RefreshTokenEntity;
+import com.payper.server.auth.jwt.repository.RefreshTokenRepository;
 import com.payper.server.auth.jwt.util.JwtParseUtil;
 import com.payper.server.auth.jwt.util.JwtProperties;
 import com.payper.server.auth.jwt.util.JwtRefreshTokenUtil;
 import com.payper.server.auth.jwt.util.JwtTokenUtil;
+import com.payper.server.global.exception.AuthException;
 import java.util.Date;
 import java.util.Optional;
 import org.junit.jupiter.api.BeforeEach;
diff --git a/src/test/java/com/payper/server/RepositoryArchitectureTest.java b/src/test/java/com/payper/server/RepositoryArchitectureTest.java
new file mode 100644
index 0000000..aed5c89
--- /dev/null
+++ b/src/test/java/com/payper/server/RepositoryArchitectureTest.java
@@ -0,0 +1,34 @@
+package com.payper.server;
+
+import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.*;
+
+import com.tngtech.archunit.core.importer.ImportOption;
+import com.tngtech.archunit.junit.AnalyzeClasses;
+import com.tngtech.archunit.junit.ArchTest;
+import com.tngtech.archunit.lang.ArchRule;
+
+/** Repository 아키텍처 규칙 검증 테스트 */
+@AnalyzeClasses(
+        packages = "com.payper.server",
+        importOptions = {ImportOption.DoNotIncludeTests.class} // test 패키지의 테스트 클래스들은 제외
+        )
+class RepositoryArchitectureTest {
+
+    private static final String CONTROLLER_PKG = "..controller..";
+    private static final String SERVICE_PKG = "..service..";
+    private static final String REPOSITORY_PKG = "..repository..";
+
+    /** Service 또는 Controller 계층을 참조하면 안 된다. */
+    @ArchTest
+    static ArchRule repositoryMustNotDependOnOtherLayers = noClasses()
+            .that()
+            .resideInAPackage(REPOSITORY_PKG)
+            .should()
+            .dependOnClassesThat()
+            .resideInAnyPackage(SERVICE_PKG, CONTROLLER_PKG);
+
+    /** repository 패키지에 있어야 한다. */
+    @ArchTest
+    static ArchRule repositoryMustResideInRepositoryPackage =
+            classes().that().haveSimpleNameContaining("Repository").should().resideInAPackage(REPOSITORY_PKG);
+}
diff --git a/src/test/java/com/payper/server/ServiceArchitectureTest.java b/src/test/java/com/payper/server/ServiceArchitectureTest.java
new file mode 100644
index 0000000..9459c73
--- /dev/null
+++ b/src/test/java/com/payper/server/ServiceArchitectureTest.java
@@ -0,0 +1,51 @@
+package com.payper.server;
+
+import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.*;
+
+import com.tngtech.archunit.core.importer.ImportOption;
+import com.tngtech.archunit.junit.AnalyzeClasses;
+import com.tngtech.archunit.junit.ArchTest;
+import com.tngtech.archunit.lang.ArchRule;
+import org.springframework.stereotype.Service;
+
+/** 서비스 아키텍처 규칙 검증 테스트 */
+@AnalyzeClasses(
+        packages = "com.payper.server",
+        importOptions = {ImportOption.DoNotIncludeTests.class} // test 패키지의 테스트 클래스들은 제외
+        )
+class ServiceArchitectureTest {
+
+    private static final String CONTROLLER_PKG = "..controller..";
+    private static final String SERVICE_PKG = "..service..";
+
+    /** @Service 어노테이션이 선언되어야 한다. */
+    @ArchTest
+    static ArchRule serviceMustBeAnnotatedWithService = classes()
+            .that()
+            .resideInAPackage(SERVICE_PKG)
+            .and()
+            .areNotInterfaces()
+            .and()
+            .areTopLevelClasses()
+            .should()
+            .beAnnotatedWith(Service.class);
+
+    /** Controller를 참조하면 안 된다. */
+    @ArchTest
+    static ArchRule serviceMustNotDependOnController = noClasses()
+            .that()
+            .resideInAPackage(SERVICE_PKG)
+            .should()
+            .dependOnClassesThat()
+            .resideInAPackage(CONTROLLER_PKG);
+
+    /** service 패키지에 있어야 한다. */
+    @ArchTest
+    static ArchRule serviceMustResideInServicePackage = classes()
+            .that()
+            .haveSimpleNameContaining("Service")
+            .and()
+            .resideOutsideOfPackage("..security..")
+            .should()
+            .resideInAPackage(SERVICE_PKG);
+}
diff --git a/src/test/java/com/payper/server/SwaggerArchitectureTest.java b/src/test/java/com/payper/server/SwaggerArchitectureTest.java
new file mode 100644
index 0000000..0e6ffcb
--- /dev/null
+++ b/src/test/java/com/payper/server/SwaggerArchitectureTest.java
@@ -0,0 +1,34 @@
+package com.payper.server;
+
+import static com.tngtech.archunit.lang.syntax.ArchRuleDefinition.classes;
+
+import com.tngtech.archunit.core.importer.ImportOption;
+import com.tngtech.archunit.junit.AnalyzeClasses;
+import com.tngtech.archunit.junit.ArchTest;
+import com.tngtech.archunit.lang.ArchRule;
+import io.swagger.v3.oas.annotations.tags.Tag;
+
+/** Swagger Api 인터페이스 아키텍처 규칙 검증 테스트 */
+@AnalyzeClasses(
+        packages = "com.payper.server",
+        importOptions = {ImportOption.DoNotIncludeTests.class} // test 패키지의 테스트 클래스들은 제외
+        )
+class SwaggerArchitectureTest {
+
+    private static final String CONTROLLER_PKG = "..controller..";
+
+    /** Swagger API 문서는 인터페이스여야 한다. */
+    @ArchTest
+    static ArchRule apiMustBeInterface =
+            classes().that().haveSimpleNameEndingWith("Api").should().beInterfaces();
+
+    /** @Tag 어노테이션이 선언되어야 한다. */
+    @ArchTest
+    static ArchRule apiInterfaceMustHaveTagAnnotation =
+            classes().that().haveSimpleNameEndingWith("Api").should().beAnnotatedWith(Tag.class);
+
+    /** controller 패키지에 있어야 한다. */
+    @ArchTest
+    static ArchRule apiInterfaceMustResideInControllerPackage =
+            classes().that().haveSimpleNameEndingWith("Api").should().resideInAPackage(CONTROLLER_PKG);
+}
diff --git a/src/test/java/com/payper/server/UserAndRefreshTokenJpaTest.java b/src/test/java/com/payper/server/UserAndRefreshTokenJpaTest.java
index 90ee844..c4b996e 100644
--- a/src/test/java/com/payper/server/UserAndRefreshTokenJpaTest.java
+++ b/src/test/java/com/payper/server/UserAndRefreshTokenJpaTest.java
@@ -2,8 +2,8 @@
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import com.payper.server.auth.jwt.RefreshTokenRepository;
 import com.payper.server.auth.jwt.entity.RefreshTokenEntity;
+import com.payper.server.auth.jwt.repository.RefreshTokenRepository;
 import com.payper.server.security.CustomUserDetails;
 import com.payper.server.user.entity.AuthType;
 import com.payper.server.user.entity.User;