Forum Discussion
Azure- and O365-Architecture for Affiliated Group Companies
My enterprise (an affiliated group of several manufacturing companies) is at a conceptual design phase of adopting Office 365 and Azure. The individual companies share very little in common. Actually...
I would suggest looking into ADFS 3.0 and FIM as a possible solution. Are there already trusts in place between groups? Having a single forest would make this a lot easier. If the ultimate goal is for everyone affiliated group to have the same @contoso.com email / login means that each groups AD would have to use the same UPN or a custom attribute to sync to Azure AD. Each tenant will be billed separately, with a single tenant you would have one bill for all the groups. This is a very complicated question and to provide a real answer would take some O365 planning days from a consultant. Which you likely have with your EA, just speak with your Microsoft acct rep.