Evan Buss focused on backend development for the AzureAD/microsoft-identity-web repository, addressing a critical issue in the RequiredScopeOrAppPermission extension. He fixed the metadata interface to restore proper handling of application permissions, ensuring downstream applications relying on authentication and authorization could function reliably. Using C# and leveraging his expertise in API development, Evan implemented comprehensive unit and regression tests to validate the new behavior and guard against future regressions. His work included clear documentation and code-quality improvements, reflecting a methodical approach to stabilizing identity permission flows. Over the month, Evan’s contributions deepened the reliability of authentication infrastructure without introducing new features.