AWS CDK Library (aws-cdk-lib)

AWS Cloud Development Kit v2 — define AWS infrastructure as Python code. Current version: 2.244.0 (Mar 2026). CDK v1 (aws-cdk.core + individual service packages) reached EOL June 2023. v2 consolidates all stable constructs into single 'aws-cdk-lib' package. Import paths completely changed from v1. Construct class moved to separate 'constructs' package. Experimental constructs use '-alpha' suffix packages. Requires CDK CLI ('npm install -g aws-cdk') and 'cdk bootstrap' for each AWS account/region.