Amazon Q Developer (formerly CodeWhisperer) is Amazon's AI coding assistant optimized for cloud development. Features include code generation with AWS service expertise, built-in security scanning, reference tracking, chat assistance, and cloud resource optimization. The AI excels at suggesting AWS SDK usage, Lambda functions, infrastructure as code, and cloud architecture patterns. Security scanner identifies vulnerabilities and suggests fixes. Free for individual developers. Particularly valuable for developers building on AWS who need cloud-native code suggestions and security best practices built-in.