I wouldn't recommend using Azure AD in production. Recently started testing Azure AD, added domain and Azure got confused dropping admin privileges which in turn lost access to the portal. Contacted support, after weeks of investigations support had to re-create Azure account from scratch meaning that I had to re-register to new subscription, but now they cannot release the domain tied in to that account. It's been 2 months and 1 week since issue has been raised to Azure support, 40+ emails, few useless calls and still no light. Based completely on my own experience Azure AD in general is far from ready to be put in production.
