What migration strategy involves the development of new code before transitioning to a cloud provider?

The strategy that involves the development of new code before transitioning to a cloud provider is known as refactoring. This approach focuses on modifying existing application code to leverage cloud capabilities better, improve performance, reduce costs, or enhance scalability. Refactoring typically entails reworking the application's codebase and can mean updating or rewriting certain components to work effectively within a cloud-native environment.

Refactoring allows for more significant improvements over simply rehosting, which involves moving the existing application without making changes, as well as replatforming, which involves making some optimizations without rethinking the application's architecture. Rearchitecting often involves entirely redesigning the application for the cloud, while refactoring strikes a balance between making necessary code changes and retaining much of the existing structure.