During December 2025, Sergio Delatorre Baba enhanced the OfficeDev/microsoft-teams-library-js repository by introducing the AppHostInfo.ancestors property, enabling applications to access their embedding hierarchy and adapt behavior based on hosting context. He extended the environment context transformation logic in TypeScript and JavaScript to surface ancestor data for embedded apps, addressing the need for greater reliability in complex embedding scenarios. Sergio also updated documentation to clarify integration points and usage of the new property. His work focused on thoughtful feature delivery and code quality, demonstrating depth in front end development and a clear understanding of context-aware application design requirements.