This document discusses strategies for modernizing front-end codebases in an incremental way. It suggests starting with basic modularization by splitting code into logical chunks, then concatenating and minifying modules. Next steps include loading modules on demand using various module systems. Graceful deprecation is recommended over breaking changes. The document also advocates trying new frameworks on side projects first before adopting one. Maintaining good development practices like testing, linting, code style rules and performance testing is emphasized over choosing any particular framework.