sync.blue® can synchronize contacts with Teams once mailboxes are hosted in Exchange Online. Microsoft automatically syncs personal Exchange Online contacts internally with Teams contacts (Calls - Contacts) even without sync.blue®.
Microsoft already internally and automatically synchronizes personal Exchange Online contacts with Teams contacts (Calls - Contacts) even without sync.blue®.
sync.blue® can be used to synchronize external contacts (from a CRM, public Exchange folder, etc.) with personal Exchange Online mailboxes (and indirectly with Teams).
- Microsoft support article Exchange and Microsoft Teams interaction