Microsoft Azure useful links :
For Architecture : https://docs.microsoft.com/en-us/azure/architecture/
For all Documentation : https://docs.microsoft.com/en-us/azure/
For Updates : https://azure.microsoft.com/en-us/updates/
Microsoft Blogs :
https://blogs.technet.microsoft.com/virtualization/
https://blogs.technet.microsoft.com/scvmm/
https://cloudblogs.microsoft.com/windowsserver/
https://azure.microsoft.com/en-us/blog/