Mastering the Foibles of the Microsoft Graph PowerShell SDK

After a while, you discover the holes in any technology. In the case of the Microsoft Graph PowerShell SDK, some inconsistencies await unwary developers. The SDK doesn't like $Null, doesn't support pipelining, insists on specific property casing at times, sometimes accepts user principal names and sometimes doesn't, and sticks valuable data in hash tables hiding in a property you might know nothing about. Good as it is to have the SDK cmdlets, they need to be treated with care as you transition from the old Azure AD and MSOL modules.