The AWS CDK is an open source software development framework for modeling and provisioning your cloud application resources through AWS CloudFormation by utilizing familiar programming languages, including TypeScript, JavaScript, Python, C#, Java, and Go.

The AWS CDK application maps to a component as defined by the AWS Well-Architected Framework. A component usually includes logical units (e.g., api, database), and optionally can have a toolchain with a continuous deployment pipeline. The logical units should be implemented as constructs, including the infrastructure (e.g., Amazon S3 buckets, Amazon RDS databases, Amazon VPC network), runtime (e.g., AWS Lambda function code), and configuration code.

For an example, I will walk through a user management backend component that utilizes Amazon API Gateway, AWS Lambda, and Amazon DynamoDB to provide basic CRUD operations for managing users. The project also includes a toolchain with a continuous deployment pipeline. This essentially contains everything required for managing the component as a unit of ownership, including the specific deployment environments.