Forum Discussion
Add domains in one tenant OR create individual tenants, that is the question
The answer is completely depending on the amount of collaboration between the companies. As every company has their own tenant collaboration becomes harder because of having to invite every user on every tenant or create some kind of sync invite and removal per tenant.
Within SharePoint and Office 365 groups you need to enable external guests to give them access.
Microsoft is working on the ability to migrate companies and have some sort of coexistence. I saw this in a presentation on Ignite last year. That presentation was for Exchange.
Branding of Office 365 is tenant wide, not a per domain. There is a uservoice for this https://office365.uservoice.com/forums/273493-office-365-admin/suggestions/30979093-allow-custom-branding-for-multiple-domains-in-one and https://office365.uservoice.com/forums/264636-general/suggestions/13404198-allow-for-different-branding-themes-for-users-on-t
In SharePoint you can do branding per site so this should not be a big issue
Great response - thank you for your input! That certainly would be a great feature that Microsoft could add later that would allow multiple tenants to have some sort of parent-child relationships.