Migration coexistence

Concept

A migration phase in which the old and new environments, for example two Microsoft 365 tenants, run side by side and are linked so mail and collaboration keep working while users move in batches.

Title graphic: Migration coexistence (Concept)

Tipo	Concept

Related to

SharePoint migration · Concept

Glossário

Community wiki

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Maintained by Mirko Peters (Microsoft MVP) · Last updated: 2026-11-10