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Customers often ask for help with implementing Blue/Green deployments to Amazon Elastic Container Service (Amazon ECS) using AWS CodeDeploy. Their use cases usually involve cross-Region and cross-account deployment scenarios. These requirements are challenging enough on their own, but in addition to those, there are specific design decisions that need to be considered when using CodeDeploy. These include how to configure CodeDeploy, when and how to create CodeDeploy resources (such as Application and Deployment Group), and how to write code that can be used to deploy to any combination of account and Region.
Today, I will discuss those design decisions in detail and how to use CDK Pipelines to implement a self-mutating pipeline that deploys services to Amazon ECS in cross-account and cross-Region scenarios. At the end of this blog post, I also introduce a demo application, available in Java, that follows best practices for developing and deploying cloud infrastructure using AWS Cloud Development Kit (AWS CDK).