This document discusses app modernization and how moving applications to the cloud on Azure can provide benefits. It outlines the app modernization continuum from refactoring existing applications to rebuilding new serverless applications. Key techniques discussed are containers, microservices, and serverless computing. Containers can help with modernization by allowing existing applications to lift and shift to containers for improved scalability. Microservices and serverless options further improve agility, productivity and operational efficiency. The document emphasizes that Azure supports a hybrid cloud approach and provides services for infrastructure, platforms and serverless applications.