Confidently migrate user data across tenants. Automate cutover, keep teams connected, and stay secure.
What’s new
Today we’re excited to announce the Public Preview of Cross-tenant Orchestrated User Data Migration (UDM), a new set of capabilities that help IT teams move user mailboxes, files, and collaboration assets between Microsoft 365 tenants with greater speed, predictability, and control.
Whether you’re consolidating after a merger, divesting a business unit, or reorganizing globally, this Public Preview brings a guided, endtoend migration experience that reduces manual steps and helps keep users productive during the transition.
Migrate more data in a single product
With a single orchestration layer coordinating the migration of multiple services, admins won’t need to manage timelines, dependencies, or interfaces of multiple tools. The submission and monitoring of a migration is all available in one spot, and batching of up to 2,000 users is supported.
All data stays within the Microsoft boundary – so migration is fast and secure.
Embedded in this tool is Identity Mapping for users. This feature allows admins to map users 1:1 from source to target and eliminates the need to manually edit target users with the required properties from the source user.
UDM includes the migration of a user’s Exchange mailbox, OneDrive, and Teams chats and meetings. With UDM, customers can choose which services should be moved.
Bring user-focused migration to your end users
We built this product with user experience in mind, aiming to limit disruption and enable collaboration at all points in the migration cycle.
Admins will specify the time at which users will feel any impact of their migration. Before this time, only backend syncing will occur, causing no disruption to your users.
Teams Chat migration is built on federation. Users will be able to collaborate across the two tenants, even if user migration times differ.
With meeting migration, meetings are automatically cancelled and rescheduled on a user’s behalf. No longer will organizers need to wait in lobbies to join their meetings or manually recreate their meetings.
Links to files stored in OneDrive will work as redirected links meaning that users will be able to access files shared with them directly from chats and emails.
Move Teams content for the first time
This product uses the technology behind the GA solutions for moving OneDrive and mailboxes. For the first time, Microsoft is offering a cross-tenant migration tool to move Teams data.
A user’s personal chats (1:1s), group chats (1:N), and meeting chats are in scope for migration. Teams migration is built on the idea of federation. When one user migrates before another, they will be able to continue their conversations in Teams in a federated chat.
How to get started
If you're ready to explore the new experience, join the Public Preview available starting today.
To get started, access the documentation on Microsoft Learn for detailed steps, licensing requirements, and how to access a promo code if needed.
Migration orchestrator overview - Microsoft 365 Enterprise | Microsoft Learn
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