Hi,
I have a question around multiple Office 365 tenancies hanging off a single on premise Active Directory forest (single domain).
As background we have the following scenario:
We have a single Active Directory Forest (single domain)
We currently have a single Office 365 tenancy configured with DirSync and ADFS supporting 160 schools.
40 of these schools wish to utilise their own Office 365 tenancy. There are a number of reasons for this, including (but not limited to); being able to associate their own EES agreement to the tenancy to allow access to the Office 365 desktop applications, have control over certain globally controllable settings and the limit of 250 Address Book Policies is becoming a hindrance in a single tenancy environment.
Initially I was going to propose a MIM solution with the AAD Connector however have read a forum posting by Peter Stapf alluding to the AAD Connector becoming depreciated and receiving no further feature updates. https://social.msdn.microsoft.com/Forums/en-US/182ac1ae-e6b9-4f89-bb8b-65481ac00b5c/mim-microsoft-identity-manager-2016-setup-for-multiple-tenants-sync?forum=WindowsAzureAD
Obviously the customer would like some clarification on this as the other option requires a virtual machine creating for each Office 365 tenancy to run their instance of Azure Active Directory Connect.
Can anyone offer any suggestion as to where I might find a statement substantiating the statement that the AAD Connector for MIM will be depreciated, and can anyone see any major pitfalls in the proposal of implementing 40+ instances of AAD Connect?
As a side to this, I am content with all my tenancies that will be introduced using the same ADFS environment to support authentication and understand I will have to utilise a third part application to pull mailboxes from the existing Office 365 tenancy to the new upon migration of the users and MX records. Further, the customer is happy there will be down time associated with moving each school from one tenancy to another.
Happy to provide any further information or detail if I have been too vague!
Many thanks in advance.