MTO is the only feature that offers those chat improvements, go with it. Other than that, cross-tenant sync is equivalent of the MTO, the latter just adds some GUI for easier configuration (and the aforementioned chat improvements, but that's Teams-specific implementation).
Cross-tenant sync vs MTO

Brandon Pinto Sobarzo
20
Reputation points
Hi everyone
i have a next situation, two organizations need improve collaboration and communication across tenants. We need view users in address book, simple chat in teams (no change profile), and so on.
what option is better in this case?
- Cross-tenant sync
- multitenant organizations (MTO)
thanks for your help!
Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
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Vasil Michev 119K Reputation points MVP Volunteer Moderator
2024-06-12T07:49:39.7133333+00:00