The Microsoft Graph .Net SDK by Microsoft allows developers to integrate the Microsoft Graph API into their .Net applications. This SDK can target .NET 4.5, .NET for Windows Store apps, and Windows Phone 8.1 or higher.
Taken together, API versioning and retirement constitute the last of the eight phases of API lifecycle management. They're also considered to be an art unto themselves. Taking that art to another level however could involve some new thinking that involves the idea of "microversioning."