This article explains how to write and execute integration tests for AWS CDK applications using the CDK integ-tests framework.

• AWS CDK provides assertions construct for unit tests and integ-tests construct for integration tests
• Integration tests validate deployed resources including IAM policies, service limits, and runtime code
• Example demonstrates serverless data enrichment app with SNS, SQS, Lambda, and DynamoDB
• AwsApiCall method executes AWS API calls via Lambda-backed CloudFormation custom resources
• Use next() to chain multiple API calls and waitForAssertions() for asynchronous validation
• integ-runner automatically provisions and removes test resources, supports customization options
• Two CloudFormation stacks created: one for application, one for test infrastructure
• RemovalPolicy set to Destroy ensures automatic resource cleanup after tests complete

AWS CDK integration tests provide automated validation of cloud applications before production deployment, improving release quality and reliability.