GitHub Actions orchestrates a fully automated CI/CD pipeline that builds Docker containers via CodeBuild, runs unit tests and security scans, then deploys to AWS ECS using blue-green deployment strategy with CodeDeploy. The workflow pushes container images to ECR, routes traffic through an Application Load Balancer across multiple availability zones, and monitors deployment health via CloudWatch alarms before traffic cutover. This architecture eliminates downtime during updates, enables instant rollback if issues arise, and maintains high availability across AZ-1 and AZ-2. Fork this diagram to customize your ECS cluster configuration, approval gates, or alarm thresholds for your team's deployment cadence. The integration of GitHub Actions with AWS native services (CodeBuild, CodeDeploy, ECR, CloudWatch) provides seamless credential management through IAM roles and Secrets Manager.