MicrosoftPaul and Sergio,
Thank you for this documentation. A few of my customers have been looking forward to seamlessly collaborate between GCCH and Commercial tenants with O365 online apps. One customer approached us to discuss options which are not well documented. Their organization is currently in a GCCH tenant with M365 GCCH organization. They frequently must collaborate with partners, vendors, etc. in Commercial tenants and M365 orgs. They have been considering deploying both GCCH and Commercial tenants and M365 orgs due to issues collaborating from GCCH and Commercial tenants mainly with O365 Online apps. That opens a whole can of worms since they are discussing options to sync identities from AD DS to GCCH and Commercial tenants and want SSO. I do not believe that is possible w/o a lot of pain, caveats, and limitations. One issue they mentioned is even with these new features, they feel the Teams web client does not offer the same features as the Teams desktop client. I see that support for the Teams desktop client is still in development in several of the diagrams. Also that Azure B2B between GCCH and Commercial tenants is still in development. Is there any roadmap that can be shared? I am a MISA member, a member of an organization that is a Microsoft Gold Partner, and we just went through several product roadmaps under NDAs. Unfortunately these roadmaps do not mention cross-tenant collaboration between GCCH and Commercial tenants. I must admit I stumbled upon this blog and sometimes find it hard to know how to search for Microsoft information and who to contact for information.
Regards,
Gary Howard
