diff --git a/build.gradle b/build.gradle
index db3ebcf1..69e0dc59 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,29 +1,31 @@
 plugins {
-	id 'java'
-	id 'org.springframework.boot' version '3.4.5'
-	id 'io.spring.dependency-management' version '1.1.7'
+    id 'org.springframework.boot' version '3.2.0'
+    id 'io.spring.dependency-management' version '1.1.4'
+    id 'java'
 }
 
 group = 'com.example'
 version = '0.0.1-SNAPSHOT'
 
 java {
-	toolchain {
-		languageVersion = JavaLanguageVersion.of(17)
-	}
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
 }
 
 repositories {
-	mavenCentral()
+    mavenCentral()
 }
 
 dependencies {
-	implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
-	implementation 'org.springframework.boot:spring-boot-starter-web'
-	testImplementation 'org.springframework.boot:spring-boot-starter-test'
-	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    implementation 'mysql:mysql-connector-java:8.0.33'
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 }
 
 tasks.named('test') {
-	useJUnitPlatform()
+    useJUnitPlatform()
 }
diff --git a/src/main/java/com/example/bcsd/BcsdApplication.java b/src/main/java/com/example/bcsd/BcsdApplication.java
index 6e3ecb1b..c1d8f85e 100644
--- a/src/main/java/com/example/bcsd/BcsdApplication.java
+++ b/src/main/java/com/example/bcsd/BcsdApplication.java
@@ -6,8 +6,8 @@
 @SpringBootApplication
 public class BcsdApplication {
 
-	public static void main(String[] args) {
-		SpringApplication.run(BcsdApplication.class, args);
-	}
+    public static void main(String[] args) {
+        SpringApplication.run(BcsdApplication.class, args);
+    }
 
 }
diff --git a/src/main/java/com/example/bcsd/Controller/ArticleController.java b/src/main/java/com/example/bcsd/Controller/ArticleController.java
new file mode 100644
index 00000000..6aaa071a
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Controller/ArticleController.java
@@ -0,0 +1,61 @@
+package com.example.bcsd.Controller;
+
+import com.example.bcsd.Service.ArticleService;
+import com.example.bcsd.dto.ArticleCreateRequest;
+import com.example.bcsd.dto.ArticleUpdateRequest;
+import com.example.bcsd.model.Article;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/articles")
+public class ArticleController {
+
+    private final ArticleService articleService;
+
+    public ArticleController(ArticleService articleService) {
+        this.articleService = articleService;
+    }
+
+    @GetMapping
+    public ResponseEntity<List<Article>> getAllArticles() {
+        return ResponseEntity.ok(articleService.findAllArticles());
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<Article> getArticleById(@PathVariable Long id) {
+        return ResponseEntity.ok(articleService.findArticle(id));
+    }
+
+    @PostMapping
+    public ResponseEntity<Article> createArticle(@RequestBody ArticleCreateRequest request) {
+        Article article = articleService.createArticle(
+                request.getAuthorId(),
+                request.getBoardId(),
+                request.getTitle(),
+                request.getContent()
+        );
+        return ResponseEntity.ok(article);
+    }
+
+    @PutMapping("/{id}")
+    public ResponseEntity<Article> updateArticle(
+            @PathVariable Long id,
+            @RequestBody ArticleUpdateRequest request
+    ) {
+        Article updated = articleService.updateArticle(
+                id,
+                request.getTitle(),
+                request.getContent()
+        );
+        return ResponseEntity.ok(updated);
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> deleteArticle(@PathVariable Long id) {
+        articleService.deleteArticle(id);
+        return ResponseEntity.ok().build();
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Controller/BoardController.java b/src/main/java/com/example/bcsd/Controller/BoardController.java
new file mode 100644
index 00000000..47d9def5
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Controller/BoardController.java
@@ -0,0 +1,52 @@
+package com.example.bcsd.Controller;
+
+import com.example.bcsd.Service.BoardService;
+import com.example.bcsd.model.Board;
+import com.example.bcsd.dto.BoardCreateRequest;
+import com.example.bcsd.dto.BoardUpdateRequest;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/boards")
+public class BoardController {
+
+    private final BoardService boardService;
+
+    public BoardController(BoardService boardService) {
+        this.boardService = boardService;
+    }
+
+    @GetMapping
+    public ResponseEntity<List<Board>> getAllBoards() {
+        return ResponseEntity.ok(boardService.findAllBoards());
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<Board> getBoard(@PathVariable Long id) {
+        return ResponseEntity.ok(boardService.findBoard(id));
+    }
+
+    @PostMapping
+    public ResponseEntity<Board> createBoard(@RequestBody BoardCreateRequest request) {
+        Board saved = boardService.createBoard(request.getName());
+        return ResponseEntity.ok(saved);
+    }
+
+    @PutMapping("/{id}")
+    public ResponseEntity<Board> updateBoard(
+            @PathVariable Long id,
+            @RequestBody BoardUpdateRequest request
+    ) {
+        Board updated = boardService.updateBoard(id, request.getName());
+        return ResponseEntity.ok(updated);
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> deleteBoard(@PathVariable Long id) {
+        boardService.deleteBoard(id);
+        return ResponseEntity.ok().build();
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Controller/LoginController.java b/src/main/java/com/example/bcsd/Controller/LoginController.java
new file mode 100644
index 00000000..53e00a0b
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Controller/LoginController.java
@@ -0,0 +1,31 @@
+package com.example.bcsd.Controller;
+
+import com.example.bcsd.Service.MemberService;
+import com.example.bcsd.dto.MemberLoginRequest;
+import com.example.bcsd.model.Member;
+import jakarta.servlet.http.HttpSession;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/login")
+public class LoginController {
+
+    private final MemberService memberService;
+
+    public LoginController(MemberService memberService) {
+        this.memberService = memberService;
+    }
+
+    @PostMapping
+    public ResponseEntity<Member> login(
+            @RequestBody MemberLoginRequest request,
+            HttpSession session
+    ) {
+        Member member = memberService.login(request);
+
+        session.setAttribute("LOGIN_MEMBER_ID", member.getId());
+
+        return ResponseEntity.ok(member);
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Controller/MemberController.java b/src/main/java/com/example/bcsd/Controller/MemberController.java
new file mode 100644
index 00000000..c1e51520
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Controller/MemberController.java
@@ -0,0 +1,69 @@
+package com.example.bcsd.Controller;
+
+import com.example.bcsd.Service.MemberService;
+import com.example.bcsd.dto.MemberCreateRequest;
+import com.example.bcsd.dto.MemberLoginRequest;
+import com.example.bcsd.dto.MemberUpdateRequest;
+import com.example.bcsd.model.Member;
+import jakarta.servlet.http.HttpSession;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/members")
+public class MemberController {
+
+    private final MemberService memberService;
+    private static final String LOGIN_MEMBER_ID = "LOGIN_MEMBER_ID";
+
+    public MemberController(MemberService memberService) {
+        this.memberService = memberService;
+    }
+
+    @GetMapping
+    public ResponseEntity<List<Member>> findAll() {
+        return ResponseEntity.ok(memberService.findAllMembers());
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<Member> findOne(@PathVariable Long id) {
+        return ResponseEntity.ok(memberService.findMember(id));
+    }
+
+    @PostMapping
+    public ResponseEntity<Member> create(@RequestBody MemberCreateRequest request) {
+        return ResponseEntity.ok(memberService.createMember(request));
+    }
+
+    @PutMapping("/{id}")
+    public ResponseEntity<Member> update(
+            @PathVariable Long id,
+            @RequestBody MemberUpdateRequest request
+    ) {
+        return ResponseEntity.ok(memberService.updateMember(id, request));
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> delete(@PathVariable Long id) {
+        memberService.deleteMember(id);
+        return ResponseEntity.noContent().build();
+    }
+
+    @PostMapping("/login")
+    public ResponseEntity<Member> login(
+            @RequestBody MemberLoginRequest request,
+            HttpSession session
+    ) {
+        Member member = memberService.login(request);
+        session.setAttribute(LOGIN_MEMBER_ID, member.getId());
+        return ResponseEntity.ok(member);
+    }
+
+    @PostMapping("/logout")
+    public ResponseEntity<Void> logout(HttpSession session) {
+        session.invalidate();
+        return ResponseEntity.noContent().build();
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Controller/PostViewController.java b/src/main/java/com/example/bcsd/Controller/PostViewController.java
new file mode 100644
index 00000000..b9eadbb9
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Controller/PostViewController.java
@@ -0,0 +1,31 @@
+package com.example.bcsd.Controller;
+
+import com.example.bcsd.Service.ArticleService;
+import com.example.bcsd.Service.MemberService;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+@Controller
+public class PostViewController {
+
+    private final ArticleService articleService;
+    private final MemberService memberService;
+
+    public PostViewController(ArticleService articleService, MemberService memberService) {
+        this.articleService = articleService;
+        this.memberService = memberService;
+    }
+
+    @GetMapping("/posts")
+    public String posts(@RequestParam(required = false) Long boardId, Model model) {
+        model.addAttribute("articles", articleService.findAllArticles());
+        model.addAttribute("members", memberService.findAllMembers());
+        if (boardId != null) {
+            model.addAttribute("articlesByBoard", articleService.getArticlesByBoardId(boardId));
+        }
+        return "posts";
+    }
+
+}
diff --git a/src/main/java/com/example/bcsd/Exception/ArticleCreateException.java b/src/main/java/com/example/bcsd/Exception/ArticleCreateException.java
new file mode 100644
index 00000000..0125b1db
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Exception/ArticleCreateException.java
@@ -0,0 +1,7 @@
+package com.example.bcsd.Exception;
+
+public class ArticleCreateException extends RuntimeException {
+    public ArticleCreateException(Long authorId, Long boardId) {
+        super("게시물 생성 중 잘못된 참조입니다.");
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Exception/ArticleNotFoundException.java b/src/main/java/com/example/bcsd/Exception/ArticleNotFoundException.java
new file mode 100644
index 00000000..7cbc65ae
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Exception/ArticleNotFoundException.java
@@ -0,0 +1,7 @@
+package com.example.bcsd.Exception;
+
+public class ArticleNotFoundException extends RuntimeException {
+    public ArticleNotFoundException(Long id) {
+        super("해당 게시글을 찾을 수 없습니다.");
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Exception/ArticleUpdateException.java b/src/main/java/com/example/bcsd/Exception/ArticleUpdateException.java
new file mode 100644
index 00000000..0ca13452
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Exception/ArticleUpdateException.java
@@ -0,0 +1,7 @@
+package com.example.bcsd.Exception;
+
+public class ArticleUpdateException extends RuntimeException {
+    public ArticleUpdateException(Long authorId, Long boardId) {
+        super("참조가 불가능합니다");
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Exception/BoardDeleteException.java b/src/main/java/com/example/bcsd/Exception/BoardDeleteException.java
new file mode 100644
index 00000000..acac4453
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Exception/BoardDeleteException.java
@@ -0,0 +1,7 @@
+package com.example.bcsd.Exception;
+
+public class BoardDeleteException extends RuntimeException {
+    public BoardDeleteException(Long boardId) {
+        super("게시판에 게시물이 존재하여 삭제할 수 없습니다.");
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Exception/BoardNotFoundException.java b/src/main/java/com/example/bcsd/Exception/BoardNotFoundException.java
new file mode 100644
index 00000000..56d585bd
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Exception/BoardNotFoundException.java
@@ -0,0 +1,7 @@
+package com.example.bcsd.Exception;
+
+public class BoardNotFoundException extends RuntimeException {
+    public BoardNotFoundException(Long id) {
+        super("해당 게시판을 찾을 수 없습니다.");
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Exception/EmailConflictException.java b/src/main/java/com/example/bcsd/Exception/EmailConflictException.java
new file mode 100644
index 00000000..ceb80db3
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Exception/EmailConflictException.java
@@ -0,0 +1,7 @@
+package com.example.bcsd.Exception;
+
+public class EmailConflictException extends RuntimeException {
+    public EmailConflictException(String email) {
+        super("이미 존재하는 이메일입니다: " + email);
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Exception/GlobalExceptionHandler.java b/src/main/java/com/example/bcsd/Exception/GlobalExceptionHandler.java
new file mode 100644
index 00000000..7a9c5af7
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Exception/GlobalExceptionHandler.java
@@ -0,0 +1,93 @@
+package com.example.bcsd.Exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(ArticleNotFoundException.class)
+    public ResponseEntity<Map<String, Object>> handleArticleNotFound(ArticleNotFoundException ex) {
+        Map<String, Object> body = new HashMap<>();
+        body.put("status", 404);
+        body.put("message", ex.getMessage());
+        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(body);
+    }
+
+    @ExceptionHandler(BoardNotFoundException.class)
+    public ResponseEntity<Map<String, Object>> handleBoardNotFound(BoardNotFoundException ex) {
+        Map<String, Object> body = new HashMap<>();
+        body.put("status", 404);
+        body.put("message", ex.getMessage());
+        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(body);
+    }
+
+    @ExceptionHandler(MemberNotFoundException.class)
+    public ResponseEntity<Map<String, Object>> handleMemberNotFound(MemberNotFoundException ex) {
+        Map<String, Object> body = new HashMap<>();
+        body.put("status", 404);
+        body.put("message", ex.getMessage());
+        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(body);
+    }
+
+    @ExceptionHandler(EmailConflictException.class)
+    public ResponseEntity<Map<String, Object>> handleEmailConflict(EmailConflictException ex) {
+        Map<String, Object> body = new HashMap<>();
+        body.put("status", 409);
+        body.put("message", ex.getMessage());
+        return ResponseEntity.status(HttpStatus.CONFLICT).body(body);
+    }
+
+    @ExceptionHandler(ArticleUpdateException.class)
+    public ResponseEntity<Map<String, Object>> handleArticleUpdate(ArticleUpdateException ex) {
+        Map<String, Object> body = new HashMap<>();
+        body.put("status", 400);
+        body.put("message", ex.getMessage());
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(body);
+    }
+
+    @ExceptionHandler(InvalidInputException.class)
+    public ResponseEntity<Map<String, Object>> handleInvalidInput(InvalidInputException ex) {
+        Map<String, Object> body = new HashMap<>();
+        body.put("status", 400);
+        body.put("message", ex.getMessage());
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(body);
+    }
+
+    @ExceptionHandler(ArticleCreateException.class)
+    public ResponseEntity<Map<String, Object>> handleArticleCreate(ArticleCreateException ex) {
+        Map<String, Object> body = new HashMap<>();
+        body.put("status", 400);
+        body.put("message", ex.getMessage());
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(body);
+    }
+
+    @ExceptionHandler(MemberDeleteException.class)
+    public ResponseEntity<Map<String, Object>> handleMemberDelete(MemberDeleteException ex) {
+        Map<String, Object> body = new HashMap<>();
+        body.put("status", 400);
+        body.put("message", ex.getMessage());
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(body);
+    }
+
+    @ExceptionHandler(BoardDeleteException.class)
+    public ResponseEntity<Map<String, Object>> handleBoardDelete(BoardDeleteException ex) {
+        Map<String, Object> body = new HashMap<>();
+        body.put("status", 400);
+        body.put("message", ex.getMessage());
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(body);
+    }
+
+    @ExceptionHandler(Exception.class)
+    public ResponseEntity<Map<String, Object>> handleGeneral(Exception ex) {
+        Map<String, Object> body = new HashMap<>();
+        body.put("status", 500);
+        body.put("message", "서버 오류가 발생했습니다.");
+        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(body);
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Exception/InvalidInputException.java b/src/main/java/com/example/bcsd/Exception/InvalidInputException.java
new file mode 100644
index 00000000..4d19909b
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Exception/InvalidInputException.java
@@ -0,0 +1,7 @@
+package com.example.bcsd.Exception;
+
+public class InvalidInputException extends RuntimeException {
+    public InvalidInputException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Exception/MemberDeleteException.java b/src/main/java/com/example/bcsd/Exception/MemberDeleteException.java
new file mode 100644
index 00000000..78a3d4bb
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Exception/MemberDeleteException.java
@@ -0,0 +1,7 @@
+package com.example.bcsd.Exception;
+
+public class MemberDeleteException extends RuntimeException {
+    public MemberDeleteException(Long memberId) {
+        super("사용자가 작성한 게시물이 존재하여 삭제할 수 없습니다.");
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Exception/MemberNotFoundException.java b/src/main/java/com/example/bcsd/Exception/MemberNotFoundException.java
new file mode 100644
index 00000000..0467a805
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Exception/MemberNotFoundException.java
@@ -0,0 +1,7 @@
+package com.example.bcsd.Exception;
+
+public class MemberNotFoundException extends RuntimeException {
+    public MemberNotFoundException(Long id) {
+        super("해당 사용자를 찾을 수 없습니다.");
+    }
+}
diff --git a/src/main/java/com/example/bcsd/HelloController.java b/src/main/java/com/example/bcsd/HelloController.java
index 9559e2f1..98b6432c 100644
--- a/src/main/java/com/example/bcsd/HelloController.java
+++ b/src/main/java/com/example/bcsd/HelloController.java
@@ -1,20 +1,67 @@
 package com.example.bcsd;
 
-import org.springframework.stereotype.Controller;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.ResponseBody;
 
-@Controller
+import org.springframework.web.bind.annotation.*;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/article")
 public class HelloController {
 
     @ResponseBody
-    @GetMapping("/hello")
-    public String hello() {
-        return "Hello World!!!!!";
+    @GetMapping("/{id}")
+    public ResponseEntity<Article> getArticle(@PathVariable int id) {
+        Article article = articleMap.get(id);
+
+        if(article == null) {
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+        return new ResponseEntity<>(article, HttpStatus.OK);
     }
 
     @GetMapping("/hello2")
     public String hello2() {
         return "hello";
     }
+
+    private Map<Integer,Article> articleMap = new HashMap<>();
+    private int newId = 1;
+
+    @PostMapping
+    public ResponseEntity<Article> postArticle(@RequestBody Article article) {
+        article.setId(newId++);
+        articleMap.put(article.getId(), article);
+
+        return new ResponseEntity<>(article,HttpStatus.CREATED);
+    }
+    @PutMapping("/{id}")
+    public ResponseEntity<Article> putArticle(
+            @PathVariable int id,
+            @RequestBody Article updated
+    ) {
+        Article existing = articleMap.get(id);
+
+        if (existing == null) {
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+
+        existing.setDescription(updated.getDescription());
+        return new ResponseEntity<>(existing, HttpStatus.OK);
+    }
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> deleteArticle(@PathVariable int id) {
+        Article removed = articleMap.remove(id);
+
+        if(removed == null){
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+    }
+
 }
diff --git a/src/main/java/com/example/bcsd/Info.java b/src/main/java/com/example/bcsd/Info.java
new file mode 100644
index 00000000..092fbb25
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Info.java
@@ -0,0 +1,23 @@
+package com.example.bcsd;
+
+public class Info {
+    private int age;
+    private String name;
+
+    public Info(int age, String name) {
+        this.age = age;
+        this.name = name;
+    }
+    public int getAge() {
+        return age;
+    }
+    public void setAge(int age) {
+        this.age = age;
+    }
+    public String getName() {
+        return name;
+    }
+    public void setName(String name) {
+        this.name = name;
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Repository/ArticleRepository.java b/src/main/java/com/example/bcsd/Repository/ArticleRepository.java
new file mode 100644
index 00000000..b481fd30
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Repository/ArticleRepository.java
@@ -0,0 +1,12 @@
+package com.example.bcsd.Repository;
+
+import com.example.bcsd.model.Article;
+import com.example.bcsd.model.Board;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+
+public interface ArticleRepository extends JpaRepository<Article, Long> {
+
+    List<Article> findByBoard(Board board);
+}
diff --git a/src/main/java/com/example/bcsd/Repository/BoardRepository.java b/src/main/java/com/example/bcsd/Repository/BoardRepository.java
new file mode 100644
index 00000000..8d665fa0
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Repository/BoardRepository.java
@@ -0,0 +1,7 @@
+package com.example.bcsd.Repository;
+
+import com.example.bcsd.model.Board;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface BoardRepository extends JpaRepository<Board, Long> {
+}
diff --git a/src/main/java/com/example/bcsd/Repository/MemberRepository.java b/src/main/java/com/example/bcsd/Repository/MemberRepository.java
new file mode 100644
index 00000000..c9a89102
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Repository/MemberRepository.java
@@ -0,0 +1,11 @@
+package com.example.bcsd.Repository;
+
+import com.example.bcsd.model.Member;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface MemberRepository extends JpaRepository<Member, Long> {
+
+    Optional<Member> findByEmail(String email);
+}
diff --git a/src/main/java/com/example/bcsd/Service/ArticleService.java b/src/main/java/com/example/bcsd/Service/ArticleService.java
new file mode 100644
index 00000000..535251cc
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Service/ArticleService.java
@@ -0,0 +1,66 @@
+package com.example.bcsd.Service;
+
+import com.example.bcsd.Repository.ArticleRepository;
+import com.example.bcsd.Repository.BoardRepository;
+import com.example.bcsd.model.Article;
+import com.example.bcsd.model.Board;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Service
+@Transactional
+public class ArticleService {
+
+    private final ArticleRepository articleRepository;
+    private final BoardRepository boardRepository;
+
+    public ArticleService(ArticleRepository articleRepository, BoardRepository boardRepository) {
+        this.articleRepository = articleRepository;
+        this.boardRepository = boardRepository;
+    }
+
+    public Article createArticle(Long authorId, Long boardId, String title, String content) {
+        Board board = boardRepository.findById(boardId)
+                .orElseThrow(() -> new IllegalArgumentException("게시판을 찾을 수 없습니다. id=" + boardId));
+
+        Article article = new Article(authorId, title, content);
+        board.addArticle(article);
+
+        return article;
+    }
+
+    @Transactional(readOnly = true)
+    public Article findArticle(Long id) {
+        return articleRepository.findById(id)
+                .orElseThrow(() -> new IllegalArgumentException("게시물을 찾을 수 없습니다. id=" + id));
+    }
+
+    @Transactional(readOnly = true)
+    public List<Article> findAllArticles() {
+        return articleRepository.findAll();
+    }
+
+    public Article updateArticle(Long id, String title, String content) {
+        Article article = articleRepository.findById(id)
+                .orElseThrow(() -> new IllegalArgumentException("게시물을 찾을 수 없습니다. id=" + id));
+
+        article.changeTitle(title);
+        article.changeContent(content);
+
+        return article;
+    }
+
+    public void deleteArticle(Long id) {
+        articleRepository.deleteById(id);
+    }
+
+    @Transactional(readOnly = true)
+    public List<Article> getArticlesByBoardId(Long boardId) {
+        Board board = boardRepository.findById(boardId)
+                .orElseThrow(() -> new IllegalArgumentException("게시판을 찾을 수 없습니다. id=" + boardId));
+
+        return board.getArticles();
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Service/BoardService.java b/src/main/java/com/example/bcsd/Service/BoardService.java
new file mode 100644
index 00000000..0e9545cb
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Service/BoardService.java
@@ -0,0 +1,45 @@
+package com.example.bcsd.Service;
+
+import com.example.bcsd.Repository.BoardRepository;
+import com.example.bcsd.model.Board;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Service
+@Transactional
+public class BoardService {
+
+    private final BoardRepository boardRepository;
+
+    public BoardService(BoardRepository boardRepository) {
+        this.boardRepository = boardRepository;
+    }
+
+    public Board createBoard(String name) {
+        Board board = new Board(name);
+        return boardRepository.save(board);
+    }
+
+    @Transactional(readOnly = true)
+    public Board findBoard(Long id) {
+        return boardRepository.findById(id)
+                .orElseThrow(() -> new IllegalArgumentException("게시판을 찾을 수 없습니다. id=" + id));
+    }
+
+    @Transactional(readOnly = true)
+    public List<Board> findAllBoards() {
+        return boardRepository.findAll();
+    }
+
+    public Board updateBoard(Long id, String name) {
+        Board board = findBoard(id);
+        board.changeName(name);
+        return board;
+    }
+
+    public void deleteBoard(Long id) {
+        boardRepository.deleteById(id);
+    }
+}
diff --git a/src/main/java/com/example/bcsd/Service/MemberService.java b/src/main/java/com/example/bcsd/Service/MemberService.java
new file mode 100644
index 00000000..ced9f6ba
--- /dev/null
+++ b/src/main/java/com/example/bcsd/Service/MemberService.java
@@ -0,0 +1,71 @@
+package com.example.bcsd.Service;
+
+import com.example.bcsd.Repository.MemberRepository;
+import com.example.bcsd.dto.MemberCreateRequest;
+import com.example.bcsd.dto.MemberLoginRequest;
+import com.example.bcsd.dto.MemberUpdateRequest;
+import com.example.bcsd.model.Member;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class MemberService {
+
+    private final MemberRepository memberRepository;
+
+    public MemberService(MemberRepository memberRepository) {
+        this.memberRepository = memberRepository;
+    }
+
+    public List<Member> findAllMembers() {
+        return memberRepository.findAll();
+    }
+
+    public Member findMember(Long id) {
+        return memberRepository.findById(id)
+                .orElseThrow(() -> new IllegalArgumentException("Member not found"));
+    }
+
+    public Member createMember(MemberCreateRequest request) {
+        Member member = new Member(
+                request.getName(),
+                request.getEmail(),
+                request.getPassword()
+        );
+        return memberRepository.save(member);
+    }
+
+    public Member updateMember(Long id, MemberUpdateRequest request) {
+        Member member = findMember(id);
+        member.changeName(request.getName());
+        member.changePassword(request.getPassword());
+        return member;
+    }
+
+    public void deleteMember(Long id) {
+        memberRepository.deleteById(id);
+    }
+
+    public Member login(MemberLoginRequest request) {
+        Member member = memberRepository.findByEmail(request.getEmail())
+                .orElseThrow(() -> new IllegalArgumentException("존재하지 않는 이메일입니다."));
+
+        if (!member.getPassword().equals(request.getPassword())) {
+            throw new IllegalArgumentException("비밀번호가 일치하지 않습니다.");
+        }
+
+        return member;
+    }
+
+    public Member login(String email, String password) {
+        Member member = memberRepository.findByEmail(email)
+                .orElseThrow(() -> new IllegalArgumentException("존재하지 않는 이메일입니다."));
+
+        if (!member.getPassword().equals(password)) {
+            throw new IllegalArgumentException("비밀번호가 일치하지 않습니다.");
+        }
+
+        return member;
+    }
+}
diff --git a/src/main/java/com/example/bcsd/dto/ArticleCreateRequest.java b/src/main/java/com/example/bcsd/dto/ArticleCreateRequest.java
new file mode 100644
index 00000000..839a7987
--- /dev/null
+++ b/src/main/java/com/example/bcsd/dto/ArticleCreateRequest.java
@@ -0,0 +1,25 @@
+package com.example.bcsd.dto;
+
+public class ArticleCreateRequest {
+
+    private Long authorId;
+    private Long boardId;
+    private String title;
+    private String content;
+
+    public Long getAuthorId() {
+        return authorId;
+    }
+
+    public Long getBoardId() {
+        return boardId;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public String getContent() {
+        return content;
+    }
+}
diff --git a/src/main/java/com/example/bcsd/dto/ArticleUpdateRequest.java b/src/main/java/com/example/bcsd/dto/ArticleUpdateRequest.java
new file mode 100644
index 00000000..e2f76e3d
--- /dev/null
+++ b/src/main/java/com/example/bcsd/dto/ArticleUpdateRequest.java
@@ -0,0 +1,15 @@
+package com.example.bcsd.dto;
+
+public class ArticleUpdateRequest {
+
+    private String title;
+    private String content;
+
+    public String getTitle() {
+        return title;
+    }
+
+    public String getContent() {
+        return content;
+    }
+}
diff --git a/src/main/java/com/example/bcsd/dto/BoardCreateRequest.java b/src/main/java/com/example/bcsd/dto/BoardCreateRequest.java
new file mode 100644
index 00000000..50b2ed41
--- /dev/null
+++ b/src/main/java/com/example/bcsd/dto/BoardCreateRequest.java
@@ -0,0 +1,10 @@
+package com.example.bcsd.dto;
+
+public class BoardCreateRequest {
+
+    private String name;
+
+    public String getName() {
+        return name;
+    }
+}
diff --git a/src/main/java/com/example/bcsd/dto/BoardUpdateRequest.java b/src/main/java/com/example/bcsd/dto/BoardUpdateRequest.java
new file mode 100644
index 00000000..c7cd108e
--- /dev/null
+++ b/src/main/java/com/example/bcsd/dto/BoardUpdateRequest.java
@@ -0,0 +1,10 @@
+package com.example.bcsd.dto;
+
+public class BoardUpdateRequest {
+
+    private String name;
+
+    public String getName() {
+        return name;
+    }
+}
diff --git a/src/main/java/com/example/bcsd/dto/LoginRequest.java b/src/main/java/com/example/bcsd/dto/LoginRequest.java
new file mode 100644
index 00000000..501bfdc9
--- /dev/null
+++ b/src/main/java/com/example/bcsd/dto/LoginRequest.java
@@ -0,0 +1,23 @@
+package com.example.bcsd.dto;
+
+public class LoginRequest {
+
+    private String email;
+    private String password;
+
+    public LoginRequest() {
+    }
+
+    public LoginRequest(String email, String password) {
+        this.email = email;
+        this.password = password;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+}
diff --git a/src/main/java/com/example/bcsd/dto/MemberCreateRequest.java b/src/main/java/com/example/bcsd/dto/MemberCreateRequest.java
new file mode 100644
index 00000000..90c7b66c
--- /dev/null
+++ b/src/main/java/com/example/bcsd/dto/MemberCreateRequest.java
@@ -0,0 +1,34 @@
+package com.example.bcsd.dto;
+
+import com.example.bcsd.model.Member;
+
+public class MemberCreateRequest {
+
+    private String name;
+    private String email;
+    private String password;
+
+    public MemberCreateRequest() {}
+
+    public MemberCreateRequest(String name, String email, String password) {
+        this.name = name;
+        this.email = email;
+        this.password = password;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public Member toEntity() {
+        return new Member(name, email, password);
+    }
+}
diff --git a/src/main/java/com/example/bcsd/dto/MemberLoginRequest.java b/src/main/java/com/example/bcsd/dto/MemberLoginRequest.java
new file mode 100644
index 00000000..2ecd4e56
--- /dev/null
+++ b/src/main/java/com/example/bcsd/dto/MemberLoginRequest.java
@@ -0,0 +1,22 @@
+package com.example.bcsd.dto;
+
+public class MemberLoginRequest {
+
+    private String email;
+    private String password;
+
+    public MemberLoginRequest() {}
+
+    public MemberLoginRequest(String email, String password) {
+        this.email = email;
+        this.password = password;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+}
diff --git a/src/main/java/com/example/bcsd/dto/MemberUpdateRequest.java b/src/main/java/com/example/bcsd/dto/MemberUpdateRequest.java
new file mode 100644
index 00000000..787c0c6f
--- /dev/null
+++ b/src/main/java/com/example/bcsd/dto/MemberUpdateRequest.java
@@ -0,0 +1,15 @@
+package com.example.bcsd.dto;
+
+public class MemberUpdateRequest {
+
+    private String name;
+    private String password;
+
+    public String getName() {
+        return name;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+}
diff --git a/src/main/java/com/example/bcsd/model/Article.java b/src/main/java/com/example/bcsd/model/Article.java
new file mode 100644
index 00000000..c403848b
--- /dev/null
+++ b/src/main/java/com/example/bcsd/model/Article.java
@@ -0,0 +1,92 @@
+package com.example.bcsd.model;
+
+import jakarta.persistence.*;
+import java.time.LocalDateTime;
+
+@Entity
+@Table(name = "article")
+public class Article {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "author_id", nullable = false)
+    private Long authorId;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "board_id", nullable = false)
+    private Board board;
+
+    @Column(nullable = false, length = 255)
+    private String title;
+
+    @Column(nullable = false, length = 2000)
+    private String content;
+
+    @Column(name = "created_date", updatable = false)
+    private LocalDateTime createdDate;
+
+    @Column(name = "modified_date")
+    private LocalDateTime modifiedDate;
+
+    protected Article() {
+    }
+
+    public Article(Long authorId, String title, String content) {
+        this.authorId = authorId;
+        this.title = title;
+        this.content = content;
+    }
+
+    @PrePersist
+    protected void onCreate() {
+        this.createdDate = LocalDateTime.now();
+        this.modifiedDate = LocalDateTime.now();
+    }
+
+    @PreUpdate
+    protected void onUpdate() {
+        this.modifiedDate = LocalDateTime.now();
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public Long getAuthorId() {
+        return authorId;
+    }
+
+    public Board getBoard() {
+        return board;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public LocalDateTime getCreatedDate() {
+        return createdDate;
+    }
+
+    public LocalDateTime getModifiedDate() {
+        return modifiedDate;
+    }
+
+    void setBoard(Board board) {
+        this.board = board;
+    }
+
+    public void changeTitle(String title) {
+        this.title = title;
+    }
+
+    public void changeContent(String content) {
+        this.content = content;
+    }
+}
diff --git a/src/main/java/com/example/bcsd/model/Board.java b/src/main/java/com/example/bcsd/model/Board.java
new file mode 100644
index 00000000..00c85dc3
--- /dev/null
+++ b/src/main/java/com/example/bcsd/model/Board.java
@@ -0,0 +1,56 @@
+package com.example.bcsd.model;
+
+import jakarta.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Table(name = "board")
+public class Board {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false, length = 100)
+    private String name;
+
+    @OneToMany(
+            mappedBy = "board",
+            cascade = CascadeType.ALL,
+            orphanRemoval = true
+    )
+    private List<Article> articles = new ArrayList<>();
+
+    protected Board() {}
+
+    public Board(String name) {
+        this.name = name;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public List<Article> getArticles() {
+        return articles;
+    }
+
+    public void changeName(String name) {
+        this.name = name;
+    }
+
+    public void addArticle(Article article) {
+        articles.add(article);
+        article.setBoard(this);
+    }
+
+    public void removeArticle(Article article) {
+        articles.remove(article);
+        article.setBoard(null);
+    }
+}
diff --git a/src/main/java/com/example/bcsd/model/Member.java b/src/main/java/com/example/bcsd/model/Member.java
new file mode 100644
index 00000000..b513fdc5
--- /dev/null
+++ b/src/main/java/com/example/bcsd/model/Member.java
@@ -0,0 +1,64 @@
+package com.example.bcsd.model;
+
+import jakarta.persistence.*;
+
+@Entity
+@Table(name = "member")
+public class Member {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false, length = 50)
+    private String name;
+
+    @Column(nullable = false, unique = true, length = 100)
+    private String email;
+
+    @Column(nullable = false, length = 255)
+    private String password;
+
+    protected Member() {
+    }
+
+    public Member(String name, String email, String password) {
+        this.name = name;
+        this.email = email;
+        this.password = password;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void changeName(String name) {
+        this.name = name;
+    }
+
+    public void changeEmail(String email) {
+        this.email = email;
+    }
+
+    public void changePassword(String encodedPassword) {
+        this.password = encodedPassword;
+    }
+
+    public void update(String name, String password) {
+        this.name = name;
+        this.password = password;
+    }
+
+}
diff --git a/src/main/resources/templates/introduce.html b/src/main/resources/templates/introduce.html
new file mode 100644
index 00000000..c8cf9f7d
--- /dev/null
+++ b/src/main/resources/templates/introduce.html
@@ -0,0 +1,10 @@
+<!DOCTYPE HTML>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <title>Getting Started: Serving Web Content</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+</head>
+<body>
+<p th:text="|안녕하세요 제 이름은 ${name}! 입니다!|" />
+</body>
+</html>
diff --git a/src/main/resources/templates/posts.html b/src/main/resources/templates/posts.html
new file mode 100644
index 00000000..3a9a496e
--- /dev/null
+++ b/src/main/resources/templates/posts.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8">
+    <title>자유게시판</title>
+    <style>
+        body { font-family: Arial; width: 600px; margin: 40px auto; }
+        h1 { margin-bottom: 30px; }
+        .post { margin-bottom: 25px; padding-bottom: 15px; border-bottom: 1px solid #ccc; }
+        .title { font-size: 20px; font-weight: bold; }
+        .meta { font-size: 14px; color: gray; margin-bottom: 10px; }
+        .desc { margin-top: 8px; }
+    </style>
+</head>
+<body>
+
+<h1>자유게시판</h1>
+
+<div th:each="article : ${articles}" class="post">
+
+    <div class="title" th:text="${article.title}">제목</div>
+
+    <div class="meta">
+        <span th:text="'회원' + ${article.authorID}"></span>
+        |
+        <span th:text="${#temporals.format(article.createdDate, 'yyyy-MM-dd')}">날짜</span>
+    </div>
+
+    <div class="desc" th:text="${article.content}"></div>
+</div>
+
+</body>
+</html>