AWS CloudFormation Lambda Serverless

Overview

Create production-ready serverless infrastructure using AWS CloudFormation templates. This skill covers Lambda functions, layers, event sources, API Gateway, Step Functions, cold start optimization, and best practices for parameters, outputs, and cross-stack references.

When to Use

Use this skill when:

• Creating new Lambda functions with CloudFormation
• Configuring Lambda layers for shared code
• Integrating Lambda with API Gateway (REST and HTTP API)
• Implementing event sources (SQS, SNS, EventBridge, S3, DynamoDB)
• Creating Step Functions with Lambda workflows
• Optimizing cold start and performance
• Organizing templates with Parameters, Outputs, Mappings, Conditions
• Implementing cross-stack references with export/import
• Using Transform for macros and reuse