Whether Active Directory minimum functional level is Windows Server 2008 or Windows Server 2008 R2
There is conflict between two documents about AD minimum functional level:
In the post https://docs.microsoft.com/en-us/sccm/core/plan-design/configs/support-for-active-directory-domains , it says minimum functional level is Windows Server 2008.
However in the post https://docs.microsoft.com/en-us/sccm/core/servers/deploy/install/list-of-prerequisite-checks , minimum functional level is Windows Server 2008 R2.
Our customer want to confirm whether Windows Server 2008 Functional Level is supported. Also, whether it is supported if the customer is using Domain Controller OS 2012 R2, but with a domain functional level of 2008.