In December 2025, Amir Kahbazi enhanced the development diagnostics experience in the dotnet/aspnetcore repository by implementing the Developer Exception Page Diagnostics Enhancement. He focused on backend development using C# and ASP.NET Core, updating the DeveloperExceptionPageMiddleware to populate the IExceptionHandlerFeature. This technical approach provided developers with richer exception context during development, streamlining the debugging process and reducing time-to-resolution for issues. Amir incorporated unit testing to ensure reliability and maintainability of the new feature. The work demonstrated a focused, in-depth contribution, addressing a specific pain point in development-time diagnostics for ASP.NET Core applications without introducing unrelated changes.