This document discusses migrating a web application from traditional servers to a serverless architecture using AWS Lambda and Amazon API Gateway. Key points discussed include:
1. Gradually migrating functionality from a legacy application to microservices built with Lambda and DynamoDB.
2. Using API Gateway and Lambda functions (API Edge) to route requests between the existing application and new microservices.
3. Implementing request routing at the edge with Lambda@Edge to direct requests to either the existing application or API Gateway based on request attributes.