The document describes an automated continuous integration and continuous deployment (CICD) pipeline using a blue-green deployment strategy. It begins by showing a basic CICD pipeline and then introduces blue-green deployment to reduce downtime when deploying new changes. It highlights how blue-green deployment preserves the last known good deployment, provides robust infrastructure by allowing quick rollbacks, and enables parallel pipelines to scale deployments. The document argues that securing the entire CICD pipeline is important as it represents potential attack vectors. It suggests implementing blue-green deployment gradually by first automating existing processes, incorporating security testing, and then fully automating blue-green deployments and security testing while scaling to multiple environments.