Troubleshooting API Gateway and AWS Lambda Integration Errors

Connecting API Gateway to AWS Lambda is a standard pattern for modern serverless applications, but debugging integration failures can feel like searching for a needle in a haystack. When generic error messages occur, knowing exactly where to look saves hours of development time. This course equips you with the systematic troubleshooting skills needed to trace, analyze, and resolve errors between your gateway and backend functions. You will transition from guessing why an integration failed to confidently reading logs and fixing configuration mismatches. What you'll learn: - Understand the foundational mechanics of API Gateway integration types and payload formats. - Diagnose common HTTP status errors, including 502 Bad Gateway and 504 Gateway Timeout issues. - Configure CloudWatch logging and tracing to capture detailed execution flows and error details. - Test backend integrations directly within the console to isolate routing and permission issues. - Apply modern structured logging practices in Lambda to simplify error detection. - Resolve CORS issues, execution role misconfigurations, and payload format mismatches. The course starts with essential concepts of API-to-Lambda communication, including request/response lifecycles. You will then progress through written walkthroughs and scenario-based exercises that teach you how to analyze logs, adjust IAM permissions, and fix common deployment bottlenecks. This course is designed for beginning cloud developers, DevOps enthusiasts, and system administrators who want to master serverless debugging. No advanced AWS experience is required. Start reading today to build more resilient serverless applications.