DevOps Lab Guides Engineers Through Full CI/CD Pipeline on AWS ECS

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A hands-on DevOps lab published on DEV Community walks engineers through building a complete CI/CD pipeline deploying a containerised web application to AWS Elastic Container Service. The CI stage uses GitHub Actions to automate code checkout, dependency installation, testing, SonarQube code-quality analysis, Docker image builds, Trivy vulnerability scanning, and pushing versioned images to Amazon ECR. Jenkins handles the CD stage, updating ECS task definitions and triggering rolling deployments while engineers observe live traffic shifting between old and new container versions. The underlying AWS infrastructure includes a custom VPC with public and private subnets across two availability zones, an internet-facing Application Load Balancer, and NAT connectivity for private workloads. The lab concludes with domain configuration, SSL/TLS certificate provisioning, and an HTTPS listener on the ALB so the final application is accessible at a custom domain over a secure connection.

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