During January 2025, Dylan Yack implemented tenant-based token validation in the microsoft/Agents-for-net repository, focusing on secure multi-tenant deployments. He introduced a TenantID field to the TokenValidation configuration, updating appsettings.json to support tenant-specific authentication scenarios. Dylan ensured that these configuration changes were clearly documented by enhancing the README in Markdown, providing guidance for onboarding new tenants and clarifying the validation flow for the CopilotStudioEchoSkill sample. His work centered on configuration management and documentation, using JSON and Markdown to maintain consistency across code and user-facing materials. The scope was focused, with depth in configuration and documentation alignment.