Since Microsoft has Released Azure AD Domain Services, many questions are coming up, and the top one of them might be: Can I join my Windows 10 Client through the internet to my Domain and receive Group Policies? No, you can’t.
But besides this, there are other questions that remains to be answered, and I will try to do so.
The first thing is to explain, what is required to get the Azure AD Domain Services (AAD DS) up and running:
1. Create a group in Azure AD called “AAD DC Administrators”
2. Create a VNET in Azure if not already existent
3. Activate the AAD DS in the Azure Portal:
4. Update DNS Settings for the specific VNET
And now, you are ready to go, for a more detailed explanation refer to this Microsoft Article.