Best Microsoft 365 Tenant-to-Tenant Migration Services for Enterprises
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Written By
Aradhya Jain -
Approved By
Shivam Rathore -
Updated on
August 18th, 2026 - Read Time
6 minutes
Introduction: In cases where companies go through mergers or restructuring, or migrate to a new Microsoft 365 platform, there will be a need to have Microsoft 365 tenant-to-tenant migration services. This may prove to be challenging, especially for large organizations with thousands of mailboxes, OneDrive, SharePoint, and Teams. The DRS Softech Tenant to Tenant Migration Tool facilitates the transfer of mailboxes from Exchange Online, SharePoint Online Libraries, OneDrive for Business, and Teams between tenants.
Why Do Users Need Microsoft 365 Migration Services?
- Mergers & acquisitions: Combining mailboxes and data from an acquired company’s tenant into the parent tenant.
- Company splits or spin-offs: A business unit separating and needing its own clean tenant.
- Move Domain Between Microsoft 365 Tenants: With a new company comes a new tenant and old data that needs to move with it.
- Multiple Tenant Consolidation: When companies have been buying smaller tenants and now wish to consolidate them all into one.
Advantages of DRS Softech: Microsoft 365 Tenant-to-Tenant Migration Services
DRS Softech offers an O365 Tenant to Tenant Migration Tool that is specifically designed for IT professionals or organizations requiring data migration between Microsoft 365 tenants. The tool supports Exchange Online mailboxes, OneDrive for Business, SharePoint Online, and Microsoft Teams.
The tool helps simplify the technical side of migration by providing features such as bulk migration, user mapping, Modern Authentication, Exchange Online Delta Migration, deduplication, and migration reports.
Mailbox Migration
Migration of mailboxes from one tenant to another in Microsoft 365 becomes complex, especially if there is a large number of users. Migration becomes easier with DRS Softech since administrators will migrate the supported users’ and shared mailboxes systematically.
- Supports Primary User and Shared Mailboxes.
- Requires active and properly licensed destination accounts.
- Supports mailbox migration between Microsoft 365 tenants.
- Public Folders, Online Archives, and Microsoft 365 Group Mailboxes are not included.
SharePoint Migration
Sharing SharePoint information among various tenants of Microsoft 365 may prove helpful during mergers and restructuring processes. DRS Softech supports the SharePoint Migration while keeping the process simple for administrators.
- Supports Document Libraries and Generic Lists.
- Supports other eligible SharePoint site content.
- Custom Lists and permissions are not migrated.
- External Sharing Settings and Blob Storage are not migrated.
- Only the latest version of each document is transferred.
- Previous document version history is not migrated due to Microsoft Graph API limitations and platform restrictions.
OneDrive Migration
Office 365 Tenant Migration Services supports OneDrive Migration while keeping the original folder structure organized.
- Migrates OneDrive files and folders.
- Preserves the original folder hierarchy.
- Malicious or quarantined files blocked by Microsoft 365 security policies cannot be migrated.
- Permissions and external sharing links are not migrated.
- Workflows and guest user mappings are not migrated due to Microsoft platform restrictions.
Microsoft Teams Migration
- Migrates supported channel messages and files.
- Supports tabs and apps.
- Migrates supported Planner data, including plans, buckets, tasks, assignments, dates, descriptions, checklists, and references.
- Announcement headers, recorded meetings, and shared channels are not migrated.
- Unsupported items are skipped due to Microsoft Teams service restrictions and API limitations.
Email, SharePoint, & OneDrive Deduplication
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Email Deduplication: Removes duplicate emails, contacts, and calendar items directly. Performs server-side scanning, eliminating the need to create PST/OST files before scanning. |
SharePoint Deduplication: Removes duplicate files from SharePoint Online document libraries. It does not affect lists, permissions, workflows, or site configurations. |
OneDrive Deduplication: It uses hash-based scanning to identify and remove duplicates. Does not modify OneDrive accounts, permissions, sharing settings, or folder ownership. |
Real-Life Scenario: Tenant Migration Services for Microsoft 365
A company acquired a smaller business with around 250 Microsoft 365 users. That business runs on its own tenant — its own emails, OneDrive files, SharePoint data, Teams content, all of it separate from the parent company’s environment.
Rather than moving 250 users by hand, the IT team turns to the DRS Softech Tenant to Tenant Migration Tool. They map users, migrate data in batches, and use delta migration to transfer recent changes. After migration, they review the reports to check successful, failed, and skipped items. This approach helps the IT team manage a large tenant migration with less manual effort.
Final Words
It becomes difficult for organizations with a lot of data and users during tenant-to-tenant migration with Microsoft 365. The DRS Softech offers the best Microsoft 365 tenant-to-tenant migration services that simplify the migration of Exchange Online, OneDrive, SharePoint, and Teams. The various features, including bulk migration, user mapping, delta migration, deduplication, and reporting, facilitate management of the process.
Frequently Asked Questions
Ans. Businesses may need these services when they merge with another company, acquire a business, split departments, combine multiple tenants, or move to a new Microsoft 365 environment.
Ans. Yes, when the migration is performed with a trusted tool and the correct permissions and authentication settings. DRS Softech supports Modern Authentication for secure access to Microsoft 365 data.
Ans. Yes. DRS Softech can migrate supported OneDrive for Business files and folders between tenants while maintaining the original folder structure.
Ans. Yes. DRS Softech allows migration of selected Teams, SharePoint, and OneDrive content between Microsoft 365 tenants. The type of data that is migrated depends on the workload supported by the tool.
Ans. When there are hundreds of users and huge amounts of data to migrate, manual migration will be very time-consuming. A migration tool will make the following activities easier: bulk migration, user mapping, delta migration, deduplication, and reporting.
Ans. Evaluate if the tool is capable of meeting all of your workloads of Microsoft 365, authentication mechanisms, bulk migrations, user mapping, delta migrations, duplicate checking, and other features.
Ans. Yes. It may be helpful in migrating the user’s supported data from the tenant of the acquired business to that of the main business tenant.
Ans. Structured migration workflow, user mapping, delta migration, deduplication, and migration reports are provided by DRS Softech. Also, pilot migration with results analysis may be performed by the administrator prior to the rest of the migration.
Ans. Costing may vary based on elements like user count, data volume, workloads to migrate, and licensing. The precise cost should be verified based on migration requirements.
