For a large organization, migrating Microsoft Teams in 2026 requires careful planning, user mapping, permission management, and a phased migration approach. IT admins should first inventory the existing Teams, channels, users, files, chats, and permissions, then map them to the destination Microsoft 365 tenant. Testing a small group before the full migration can also help identify permission or data-structure issues.

For larger projects, the  Aryson Tenant to Tenant Migration Tool can simplify the process. It helps IT admins migrate Teams between tenants, including Teams, channels, files, chats, and permissions. Organizations can use a phased approach to migrate departments or user groups while monitoring migration logs and reports to verify the transferred data. This makes it suitable for tenant consolidation, mergers, acquisitions, and other large-scale Microsoft 365 migrations.
 

Also Read: Migrate Microsoft Teams Between Tenants