Worked on targeted technical debt reduction in the dfinity/new-motoko-base repository by deprecating legacy M235 API methods, specifically fromVarArray and fromArray. This backend development effort focused on simplifying the API surface and improving maintainability for future migrations. The approach involved marking outdated functions as deprecated within the Motoko codebase, updating the changelog, and preparing release notes to guide teams through the transition. Collaboration with other contributors ensured cross-team alignment and a clear upgrade path. The work emphasized functional programming principles and aimed to reduce legacy usage, resulting in a cleaner, more maintainable codebase for ongoing and future development.