Microsoft 365 tenant-to-tenant migration

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Microsoft 365 tenant-to-tenant migration

Migrating from one Microsoft 365 tenant to another — the workloads, the tools, and the realistic timeline.

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/microsoft-365-tenant-to-tenant-migration

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How long does a tenant-to-tenant migration take?

Three to nine months for a mid-sized organisation: discovery and design, identity and domain planning, mailbox and file migration in waves, Teams and SharePoint migration (the hardest part), device re-enrolment, and cut…

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/microsoft-365-tenant-to-tenant-migration

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Can I move a domain between tenants without downtime?

Not entirely. The domain must be removed from the source tenant before the target can verify it, which means a cutover window where addresses on that domain do not exist in either tenant. Microsoft's cross-tenant migrat…

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/microsoft-365-tenant-to-tenant-migration

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What migrates and what does not in a tenant move?

Mailboxes, OneDrive, SharePoint, and Teams content migrate with tooling (Microsoft's cross-tenant mailbox and OneDrive migration, or third-party tools). Entra configuration, Conditional Access, Intune policies, app regi…

Solving Microsoft 365 · www.solvingmicrosoft365.com/guides/microsoft-365-tenant-to-tenant-migration

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