Setting up an Active Directory Network in Windows Azure

This article looks pretty comprehensive, but I've not yet tried it.
http://community.adxstudio.com/blogs/shan/2013-07-02-setting-up-an-active-directory-network-in-windows/

The next step would be to configure Direct Access and then join workstations to the domain using Offline Domain Join.

BOOM!

Join a Mac to a Domain

There are some good discussions about doing this and working through the issues on the following sites:
http://community.spiceworks.com/topic/361908-joining-a-mac-to-a-domain-user-profile-migration
http://www.macenterprise.org/articles/migratingalocalusertoanetworkuser

I'm not sure at this point where to find something on the actual domain-joining procedure.