During December 2025, tmacam focused on backend development within the Azure/azure-sdk-for-net repository, addressing a critical bug in the Azure Provisioning SDK’s DNS CNAME property handling. By refactoring DNS record class property names and correcting property backing semantics, tmacam improved consistency and reliability in DNS provisioning for .NET users. The work involved updating unit tests to ensure robust regression prevention and maintain strong test coverage across the DNS provisioning flow. Leveraging expertise in C#, Azure SDK development, and unit testing, tmacam delivered a cleaner API surface and reduced the risk of misconfiguration, demonstrating depth in both code quality and maintainability.