diff --git a/api-app/README.md b/api-app/README.md
index b8ed3cf..81313b0 100644
--- a/api-app/README.md
+++ b/api-app/README.md
@@ -152,7 +152,7 @@ api-app                          # 메인 실행 모듈
 │   │   │   ├── DabeeoDetectionApiApplication.java
 │   │   │
 │   │   │   ├── config              # 설정 파일
-│   │   │
+│   │   │   ├── core                # core service (Repository 비즈니스 서비스)
 │   │   │   ├── domain              # 도메인
 │   │   │   │   ├── imagery         # 영상 데이터 관리
 │   │   │   │   ├── labeling        # 라벨링 툴
@@ -174,6 +174,7 @@ api-app                          # 메인 실행 모듈
 │   └── build.gradle
 │
 ├── infrastructure-db-postgres      # Postgres 전용 설정/확장
+│   ├── repository # Repository impl 구현
 │   └── build.gradle
 │
 ├── build.gradle
diff --git a/api-app/app/build.gradle b/api-app/app/build.gradle
index 60ebeb3..c3676ea 100644
--- a/api-app/app/build.gradle
+++ b/api-app/app/build.gradle
@@ -5,6 +5,9 @@ plugins {
 }
 
 dependencies {
+
+    runtimeOnly 'com.h2database:h2'
+
     // postgres
     implementation project(':infrastructure-db-postgres')
 
diff --git a/api-app/app/src/main/java/com/cd/detection/core/.gitkeep b/api-app/app/src/main/java/com/cd/detection/core/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/domain/imagery/controller/.gitkeep b/api-app/app/src/main/java/com/cd/detection/domain/imagery/controller/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/domain/imagery/dto/.gitkeep b/api-app/app/src/main/java/com/cd/detection/domain/imagery/dto/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/domain/imagery/service/.gitkeep b/api-app/app/src/main/java/com/cd/detection/domain/imagery/service/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/domain/inference/.gitkeep b/api-app/app/src/main/java/com/cd/detection/domain/inference/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/domain/label/.gitkeep b/api-app/app/src/main/java/com/cd/detection/domain/label/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/domain/labeling/.gitkeep b/api-app/app/src/main/java/com/cd/detection/domain/labeling/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/domain/log/.gitkeep b/api-app/app/src/main/java/com/cd/detection/domain/log/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/domain/model/.gitkeep b/api-app/app/src/main/java/com/cd/detection/domain/model/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/domain/system/.gitkeep b/api-app/app/src/main/java/com/cd/detection/domain/system/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/entity/.gitkeep b/api-app/app/src/main/java/com/cd/detection/entity/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/repository/imagery/.gitkeep b/api-app/app/src/main/java/com/cd/detection/repository/imagery/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/repository/inference/.gitkeep b/api-app/app/src/main/java/com/cd/detection/repository/inference/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/repository/label/.gitkeep b/api-app/app/src/main/java/com/cd/detection/repository/label/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/repository/labeling/.gitkeep b/api-app/app/src/main/java/com/cd/detection/repository/labeling/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/repository/log/.gitkeep b/api-app/app/src/main/java/com/cd/detection/repository/log/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/repository/model/.gitkeep b/api-app/app/src/main/java/com/cd/detection/repository/model/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/java/com/cd/detection/repository/system/.gitkeep b/api-app/app/src/main/java/com/cd/detection/repository/system/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/api-app/app/src/main/resources/application-dev.yml b/api-app/app/src/main/resources/application-dev.yml
index 8eaeef8..1f6ef77 100644
--- a/api-app/app/src/main/resources/application-dev.yml
+++ b/api-app/app/src/main/resources/application-dev.yml
@@ -1,5 +1,15 @@
 spring:
   datasource:
-    url: jdbc:postgresql://localhost:5432/dabeeo_detection_dev
-    username: dabeeo_detection
-    password: 1234
\ No newline at end of file
+    url: jdbc:h2:mem:testdb
+    username: sa
+    password:
+    driver-class-name: org.h2.Driver
+
+  jpa:
+    database-platform: org.hibernate.dialect.H2Dialect
+    hibernate:
+      ddl-auto: create-drop
+
+  h2:
+    console:
+      enabled: true
\ No newline at end of file
diff --git a/api-app/app/src/main/resources/application-prod.yml b/api-app/app/src/main/resources/application-prod.yml
index 8eaeef8..1f6ef77 100644
--- a/api-app/app/src/main/resources/application-prod.yml
+++ b/api-app/app/src/main/resources/application-prod.yml
@@ -1,5 +1,15 @@
 spring:
   datasource:
-    url: jdbc:postgresql://localhost:5432/dabeeo_detection_dev
-    username: dabeeo_detection
-    password: 1234
\ No newline at end of file
+    url: jdbc:h2:mem:testdb
+    username: sa
+    password:
+    driver-class-name: org.h2.Driver
+
+  jpa:
+    database-platform: org.hibernate.dialect.H2Dialect
+    hibernate:
+      ddl-auto: create-drop
+
+  h2:
+    console:
+      enabled: true
\ No newline at end of file
diff --git a/api-app/app/src/main/resources/application.yml b/api-app/app/src/main/resources/application.yml
index 9810f88..941b9bc 100644
--- a/api-app/app/src/main/resources/application.yml
+++ b/api-app/app/src/main/resources/application.yml
@@ -8,4 +8,13 @@ spring:
     show-sql: true
     properties:
       hibernate:
-        format_sql: true
\ No newline at end of file
+        format_sql: true
+
+management:
+  endpoints:
+    web:
+      base-path: /monitor
+  endpoint:
+    health:
+      probes:
+        enabled: true
\ No newline at end of file
diff --git a/api-app/infrastructure-db-postgres/repository/.gitkeep b/api-app/infrastructure-db-postgres/repository/.gitkeep
new file mode 100644
index 0000000..e69de29