Looks like Microsoft has a mailbox migration option
https://learn.microsoft.com/en-us/microsoft-365/enterprise/cross-tenant-mailbox-migration
Cross tenant Microsoft 365 groups migration without data loss
Hi All,
As part of my Cross Tenant migration / Consolidation project, I need some help and suggestion on how to perform the migration of Microsoft 365 groups to another Office 365 tenant without data loss.
So far I can only see this article which requires me to buy 3rd party software: https://learn.microsoft.com/en-us/exchange/mailbox-migration/migrate-mailboxes-across-tenants#scenario-migrate-using-a-third-party-migration-tool
What's the built-in method or the procedures from Microsoft without additional purchase?
Thank you in advance.
3 answers
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Isaac Maimon 1 Reputation point
2022-03-05T19:22:06.19+00:00 -
Vasil Michev 97,231 Reputation points MVP
2021-08-04T07:54:02.657+00:00 Microsoft doesn't offer anything in this space. Either go for a third-party tool, or be prepared to spend lot of time/effort for manual migration tasks.
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Sharon Zhao-MSFT 25,061 Reputation points Microsoft Vendor
2021-08-04T07:48:37.197+00:00 It has no official tool to realize Microsoft 365 tenant-to-tenant migrations now. The following image shows the migration details for each product:
Besides, here is an article which contains the tenant-to-tenant migration architecture model in PDF for reference.
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