Offer a continuous integration service like BuildHive
BuildHive is a cloud based continuous integration service for Java applications. It polls Git for changes. After each commit it builds the code and runs unit tests, sending emails on failure.
Microsoft could offer a similar service for .NET
VSTS offers a complete CI and Release management system that will work equally well for .NET and many other languages https://www.visualstudio.com/en-us/docs/build/overview https://www.visualstudio.com/en-us/docs/release/overview
Though I can't comment on any of the specific details (of which I know very little, frankly), we are making a larger investment in the Java developer experience atop the Windows Azure platform.