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/