[Updates] Create a complete windows update management solution in WAC
A complete solution replacing wsus/sccm with the following features:
Group based deployment
Support for updating OS and MS applications (SQL/Sharepoint/S4B)
Maintenance window management
Cluster aware updating
RELIABLE and fast reporting
Real time throubleshooting of installation status
I suspect that Azure Update Management is the solution Microsoft is suggesting. I don't use it so I can't say that it will meet all your requirements but it's probably the only solution we'll get.
WAC is a means to sell more Azure services.