To make things easier for Office 365 tenant administrators, Microsoft has released four new administrative role for Teams. You can now assign these roles to other people and have them take care of areas like Teams general admin or the more complicated area of voice and audio meetings and calling. It’s a sign of increased maturity in the Teams product.
Active Directory really does keep getting better with age! Learn to install the AD domain services role on Windows Server 2012 in this handy how-to.