Demystifying Microsoft 365 Cross-Tenant Migration: A Comprehensive Guide | Part 1

Microsoft 365 Cross-Tenant Migration


Microsoft 365 tenant to tenant migration can be done for a variety of reasons, such as a merger or acquisition, a change in business requirements, or a desire to consolidate multiple tenants.

Transferring all Office 365 licenses from one tenant to another is absolutely possible – when an Enterprise agreement is involved. The Office 365 Support team can help start the remap process.

There are a few different ways to perform an Office 365 tenant to tenant migration. One option is to use the native tools provided by Microsoft. This process is relatively straightforward, but it can be time-consuming, especially for large tenants.

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Cross Tenant Migration Options

If you are not signed up for Microsoft Enterprise Agreement then another option is to use a third-party migration tool. These tools can make the migration process much faster and easier, and they often offer additional features, such as the ability to migrate data from other cloud platforms.

The best way to perform an Office 365 tenant to tenant migration will depend on the specific needs of your organization. If you are unsure which method is right for you, it is a good idea to consult with a Microsoft partner or a third-party migration specialist.

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Office 365 cross tenant (Native Tools)

Using Office 365 Native Tools

Cross Tenant User Data Migration is available as an add-on to the following Microsoft 365 subscription plans for Enterprise Agreement customers.


  1. Low/No cost
  2. Native tools
  3. No Third-Party support required


  1. Still a preview feature
  2. Tricky to set up (currently)
  3. Does not support Public Folders
  4. Mailbox moves may not be as flexible as data synchronization used by third-party tools

Using Third-Party Migration Tools

There is a licensing cost associated with each third-party tool.


  1. Flexible data synchronization options
  2. Supports Multi-Platform source and destination
  3. Bundle licensing allows for more that just Exchange Data
  4. Easy to set up


  1. Licensing Cost
  2. Third-party support required for issues
  3. Organizations may not have in-house experience with these tools

Some 3rd party tools suggested by Microsoft & Expert Community

Quest On Demand Migration Tool (SaaS Platform)

Migrate all workloads and Active Directory with one comprehensive Office 365 tenant-to-tenant migration solution.

What is migrated?

  1. Active Directory
  2. Azure Active Directory
  3. Exchange Online
  4. OneDrive
  5. SharePoint Online

Quest offers the following plans.

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Quest On Demand Migration Tool

Teams & M365 Groups

Kernel Office 365 Migration (On-Premises Platform)

Office 365 Complete Tenant to Tenant ( mailbox, SharePoint, one-drive, and teams)

  1. Support and Maintenance
  2. Professional Services, Installation 

BitTitan (SaaS Platform)

The complete solution for Mergers and Acquisitions the Tenant Migration Bundle covers data stored in Exchange, OneDrive, SharePoint, and Teams – the most commonly-used applications in the Office 365 cloud office suite.

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BitTitan Migration Tool

CloudiWay (SaaS Platform)

Offers complete migration solution for Office 365.

If you are looking for user friendly, reliability and coexistence features then Quest is recommended tool.

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Quest On Demand Migration (Cross Tenant)


If you are considering performing an Office 365 tenant to tenant migration, it is important to weigh the benefits and drawbacks carefully. With careful planning and execution, a tenant to tenant migration can be a successful and beneficial experience.

Microsoft 365 Cross Tenant Mailbox Migration (Native Tools) | Part 2

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