AWS CDK Infrastructure Best Practices

TypeScript

• Use strict type checking
• Import from aws-cdk-lib and constructs
• Use L2 constructs when available, L1 (Cfn*) when necessary

Architecture — Single Stack

The entire application is provisioned by one CDK stack (PlatformStack). Application code is shipped out-of-band via AWS APIs (ECR push → ECS service update / Lambda code update / AgentCore Runtime update).