Blue/Green Deployment

Blue/Green Deployment Progress

The Blue/Green deployment strategy enables seamless updates with minimal downtime by shifting traffic between two environments — “Blue” (current) and “Green” (new).

Deployment Preparation

The following slides show the steps involved in preparing the Green environment for deployment:

Creating the new task definition and preparing ECS services for deployment.

Verifying the health of the Green target group and ensuring it is registered with the new tasks.

Traffic shifting begins, validating the new version through load balancer testing.

Monitoring the success of the traffic switch from Blue to Green and ensuring service continuity.

Dropping Old Container

Once the Green environment is stable and fully receiving traffic, the old (Blue) version is safely terminated:

ECS tasks from the previous version are drained and removed to free up resources.

Completion of Blue/Green Deployment

The deployment completes successfully after the new version proves stable and healthy:

Final confirmation screen showing successful cutover to Green environment.

Container Logs

Logs from the new container version are reviewed to ensure correct startup and application behavior:

Application logs showing successful service initialization.

Confirmation of endpoint readiness and healthy responses.

By using this deployment strategy, we reduce risk, enable fast rollback, and maintain high availability during application updates.