diff --git a/.github/workflows/be_cd-production.yml b/.github/workflows/be_cd-production.yml
index 717379615..a4af9e37a 100644
--- a/.github/workflows/be_cd-production.yml
+++ b/.github/workflows/be_cd-production.yml
@@ -40,8 +40,8 @@ jobs:
 
       - name: Image build and push
         run: |
-          docker build --build-arg PROFILE=prod --build-arg DEPENDENCY=build/dependency -t ${{ secrets.DOCKER_REPO_NAME }}/springboot-app:test-latest --platform linux/arm64 .
-          docker push ${{ secrets.DOCKER_REPO_NAME }}/springboot-app:test-latest
+          docker build --build-arg PROFILE=prod --build-arg DEPENDENCY=build/dependency -t ${{ secrets.DOCKER_REPO_NAME }}/springboot-app:latest --platform linux/arm64 .
+          docker push ${{ secrets.DOCKER_REPO_NAME }}/springboot-app:latest
 
       - name: Upload docker-compose yaml script to artifact
         uses: actions/upload-artifact@v4
@@ -69,13 +69,21 @@ jobs:
 
       - name: Extract secrets as .be_app-env file
         run: |
+          echo $(pwd)
+          chmod +x ./deploy.sh # 스크립트에 실행 권한 부여 
+          echo chmod ok
+          source ./deploy.sh
+          echo source ok
+          echo "BLUE_PORT=$BLUE_PORT" >> $GITHUB_ENV
+          echo "GREEN_PORT=$GREEN_PORT" >> $GITHUB_ENV
+          
           cat <<EOF > ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env
 
           # Docker Hub info from Github Secrets
           DOCKER_REPO_NAME=${{ secrets.DOCKER_REPO_NAME }}
+          DOCKER_IMAGE_VERSION=latest
 
           # DB Configuration secrets info from Github Secrets
-          MYSQL_DB_NAME=${{ secrets.MYSQL_DB_NAME }}
           MYSQL_TIME_ZONE=${{ secrets.MYSQL_TIME_ZONE }}
           DB_BINDING_PORT=${{ secrets.DB_BINDING_PORT }}
           DOCKER_DATA_PATH=${{ secrets.DOCKER_DATA_PATH }}
@@ -97,21 +105,39 @@ jobs:
           INSTANCE_NAME=${{ secrets.INSTANCE_A_NAME }}
           
           # Server App
-          SERVER_BINDING_PORT=${{ secrets.PRODUCTION_SERVER_BINDING_PORT }}
+          BLUE_SERVER_BINDING_PORT=${BLUE_PORT}
+          GREEN_SERVER_BINDING_PORT=${GREEN_PORT}
           SERVER_LOGS_PATH=${{ secrets.SERVER_LOGS_PATH }}
           EOF
-
-      - name: Stop and remove existing containers
+      
+      - name: remove old spring-app image
+        run: |
+          sudo docker image rm -f ${{ secrets.DOCKER_REPO_NAME }}/springboot-app;
+          
+      - name: Start the new (green/blue) environment
+        run: |
+          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml -p $GREEN_PORT up -d
+        
+      - name: Wait for new environment to be healthy
         run: |
-          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml down --rmi all
-      - name: Deploy docker container
+          until curl -sf http://localhost:${GREEN_PORT}/api/actuator/health | grep "UP"; do sleep 5; done
+
+      - name: Reload NGINX
         run: |
-          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml up -d
+          sudo systemctl reload nginx
 
+      - name: Stop and remove the old environment
+        run: |
+          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml -p $BLUE_PORT down
+      
+      - name: Delete Dangling docker images
+        run: |
+          sudo docker image prune -a -f
+          
   deployB:
     environment: production
     runs-on: production-ec2-B-runner
-    needs: deployA
+    needs: build
     defaults:
       run:
         working-directory: ./backend
@@ -126,15 +152,20 @@ jobs:
         run: |
           sudo mv be_app-docker-compose.yml ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/
 
-      - name: waiting deployA complete
-        run: |
-          sudo ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/scheduler.sh
-
       - name: Extract secrets as .be_app-env file
         run: |
+          echo $(pwd)
+          chmod +x ./deploy.sh # 스크립트에 실행 권한 부여 
+          echo chmod ok
+          source ./deploy.sh
+          echo source ok
+          echo "BLUE_PORT=$BLUE_PORT" >> $GITHUB_ENV
+          echo "GREEN_PORT=$GREEN_PORT" >> $GITHUB_ENV
+          
           cat <<EOF > ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env
 
           # Docker Hub info from Github Secrets
+          DOCKER_IMAGE_VERSION=latest
           DOCKER_REPO_NAME=${{ secrets.DOCKER_REPO_NAME }}
 
            # DB Configuration secrets info from Github Secrets
@@ -150,7 +181,6 @@ jobs:
           SLAVE_DB_PASSWORD=${{ secrets.SLAVE_DB_PASSWORD }}
           DDL_AUTO=${{ secrets.DDL_AUTO }}
 
-
           # OAUTH & JWT
           CLIENT_ID=${{ secrets.CLIENT_ID }}
           CLIENT_SECRET=${{ secrets.CLIENT_SECRET }}
@@ -160,15 +190,32 @@ jobs:
           # INSTANCE NAME
           INSTANCE_NAME=${{ secrets.INSTANCE_B_NAME }}
 
-
           # Server App
-          SERVER_BINDING_PORT=${{ secrets.PRODUCTION_SERVER_BINDING_PORT }}
+          BLUE_SERVER_BINDING_PORT=${BLUE_PORT}
+          GREEN_SERVER_BINDING_PORT=${GREEN_PORT}
           SERVER_LOGS_PATH=${{ secrets.SERVER_LOGS_PATH }}
           EOF
 
-      - name: Stop and remove existing containers
+      - name: remove old spring-app image
+        run: |
+          sudo docker image rm -f ${{ secrets.DOCKER_REPO_NAME }}/springboot-app;
+
+      - name: Start the new (green/blue) environment
+        run: |
+          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml -p $GREEN_PORT up -d
+
+      - name: Wait for new environment to be healthy
+        run: |
+          until curl -sf http://localhost:${GREEN_PORT}/api/actuator/health | grep "UP"; do sleep 5; done
+
+      - name: Reload NGINX 
+        run: |
+          sudo systemctl reload nginx
+
+      - name: Stop and remove the old environment
         run: |
-          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml down --rmi all
-      - name: Deploy docker container
+          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml -p $BLUE_PORT down
+      
+      - name: Delete Dangling docker images
         run: |
-          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml up -d
+          sudo docker image prune -a -f
diff --git a/.github/workflows/be_cd-test.yml b/.github/workflows/be_cd-test.yml
index d88f5a059..4c5d76003 100644
--- a/.github/workflows/be_cd-test.yml
+++ b/.github/workflows/be_cd-test.yml
@@ -128,4 +128,8 @@ jobs:
           
       - name: Delete Dangling docker images
         run: |
-          sudo docker image prune -a -f
+          sudo docker-compose --env-file ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/.be_app-env -f ${{ secrets.DOCKER_COMPOSE_YAML_PATH }}/be_app-docker-compose.yml up -d
+
+      - name: Delete Dangling docker images
+        run: |
+          sudo docker image prune
diff --git a/backend/src/main/resources/application-prod.yml b/backend/src/main/resources/application-prod.yml
index ac8d94932..60b34aee1 100644
--- a/backend/src/main/resources/application-prod.yml
+++ b/backend/src/main/resources/application-prod.yml
@@ -33,11 +33,12 @@ management:
   endpoints:
     web:
       exposure:
-        include: prometheus
+        include: prometheus, health
       base-path: /api/actuator
 
 server:
   tomcat:
+    accept-count: 300
     mbeanregistry:
       enabled: true