In my latest article on SearchExchange, I look at how you could, and why you should avoid, use multiple Office 365 tenants with your global Active Directory.

Traditionally with Office 365, the Windows Azure Active Directory Sync Tool (DirSync) operated on a one Active Directory to one Office 365 tenant basis::

Recent improvements to DirSync mean that some restrictions have been lifted, and it’s now possible to have a single Active Directory forest synchronizing with multiple Office 365 tenants, potentially across geographic regions:

However, there’s many more reasons why you shouldn’t do this which we explore more in the article, before looking at the reasons why you might need to and what the technical limitations and restrictions are.

Read the full article over on SearchExchange