diff --git a/backend/src/app.controller.spec.ts b/backend/src/app.controller.spec.ts
deleted file mode 100644
index d22f389..0000000
--- a/backend/src/app.controller.spec.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-import { Test, TestingModule } from '@nestjs/testing';
-import { AppController } from './app.controller';
-import { AppService } from './app.service';
-
-describe('AppController', () => {
-  let appController: AppController;
-
-  beforeEach(async () => {
-    const app: TestingModule = await Test.createTestingModule({
-      controllers: [AppController],
-      providers: [AppService],
-    }).compile();
-
-    appController = app.get<AppController>(AppController);
-  });
-
-  describe('root', () => {
-    it('should return "Hello World!"', () => {
-      expect(appController.getHello()).toBe('Hello World!');
-    });
-  });
-});
diff --git a/backend/src/app.controller.ts b/backend/src/app.controller.ts
deleted file mode 100644
index cce879e..0000000
--- a/backend/src/app.controller.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-import { Controller, Get } from '@nestjs/common';
-import { AppService } from './app.service';
-
-@Controller()
-export class AppController {
-  constructor(private readonly appService: AppService) {}
-
-  @Get()
-  getHello(): string {
-    return this.appService.getHello();
-  }
-}
diff --git a/backend/src/app.module.ts b/backend/src/app.module.ts
index 8662803..52a881e 100644
--- a/backend/src/app.module.ts
+++ b/backend/src/app.module.ts
@@ -1,10 +1,13 @@
 import { Module } from '@nestjs/common';
-import { AppController } from './app.controller';
-import { AppService } from './app.service';
+import { TypeOrmModule, TypeOrmModuleOptions } from '@nestjs/typeorm';
+import { config } from 'config';
+import { LibsModule } from 'libs/libs.module';
+import { AppInitService } from './modules/initialization/app.init.service';
+import { UserModule } from './modules/user/user.module';
 
 @Module({
-  imports: [],
-  controllers: [AppController],
-  providers: [AppService],
+    imports: [LibsModule, UserModule, TypeOrmModule.forRoot(<TypeOrmModuleOptions>config.database)],
+    controllers: [],
+    providers: [AppInitService],
 })
 export class AppModule {}
diff --git a/backend/src/app.service.ts b/backend/src/app.service.ts
deleted file mode 100644
index 927d7cc..0000000
--- a/backend/src/app.service.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-import { Injectable } from '@nestjs/common';
-
-@Injectable()
-export class AppService {
-  getHello(): string {
-    return 'Hello World!';
-  }
-}