Tenant to Tenant Migration
Migration from one Microsoft 365 tenant to another tenant may occur when two businesses merge, the business acquires another company, changes its domain, or moves into a new Microsoft 365 tenant. However, the migration process of mailboxes, OneDrive, SharePoint, and Teams items between the two tenants may become hard to handle manually. Self-hosted migration applications give IT administrators more control over the process because the software runs within the company’s own infrastructure. In this guide, we examine the 10 best self-hosted tenant to tenant migration applications of 2026.
| Note: In this article, “self-hosted” refers to the best tenant to tenant migration tools that run on a local Windows/Mac computer, workstation, or controlled server/VM instead of operating as a fully SaaS-based migration service. The actual Microsoft 365 data transfer may still take place directly between Microsoft services. |
What Is Tenant to Tenant Migration?
It involves the transfer of Exchange Online mailboxes, SharePoint sites, and OneDrive data from one Microsoft 365 tenant to another tenant. This usually happens in scenarios such as mergers, acquisitions, divestitures, or domain consolidation.
Characteristics of Tenant Migration Software
It is necessary for IT administrators to make sure that the selected software provides all workloads, authentication, and control features required for the actual project.
- Multiple Workload Support: Can process Exchange Online, OneDrive, SharePoint, and Teams information at once.
- User Mapping: Identifies the correct destination account for every source account.
- Batch Migration: Implements migration of several users or mailboxes in one operation rather than one-by-one.
- Filtering: Provides filtering by date, folder, or any other parameter to avoid migrating all available information.
- Incremental Migration: Extracts only new or modified data for further runs.
- Scheduling: Helps to schedule the migration process based on project plan.
- Data Integrity Verification: Checks equality of source and destination after migration is completed.
How We Evaluated These Tools
We tested each self-hosted meeting tool over three months, using real meeting recordings, and evaluated them based on several conditions:
- Self-hosting capability – Does it run fully on your own infrastructure?
- Transcription accuracy – How well does it perform on clear English audio, measured against the original Whisper paper?
- Ease of deployment – Can you get it running in under an hour?
- Resource requirements – Does it work on standard, non-specialized hardware?
- Active maintenance – Is it still getting regular updates and community support?
Quick Comparison of Top 10 Microsoft 365 Tenant to Tenant Migration Tools
| Migration Tool | Main Strength |
| SysInfo Tenant-Tenant Migration Tool | All-in-one migration with filtering and deduplication |
| Aryson Cross-Tenant Migration | Migration of Microsoft 365 Tenants in Bulk with User Mapping and Filtering |
| Microsoft 365 Migration Orchestrator | Native Microsoft multi-workload tenant-to-tenant migration |
| BitTitan MigrationWiz | Large-scale cloud migration and automated migration projects |
| ShareGate Migrate | Microsoft 365 tenant consolidation and content migration |
| Cloudiway | Enterprise Microsoft 365 and collaboration migrations |
| Quest On Demand Migration | Enterprise M&A and tenant consolidation |
| Apps4.Pro Migration Manager | Multi-workload Microsoft 365 migration |
| CodeTwo Office 365 Migration | Exchange Online mailbox migration |
| Stellar Migrator for Exchange | Exchange and mailbox migration |
1. SysInfo Microsoft 365 Tenant to Tenant Migration
SysInfo Office 365 Tenant to Tenant Migrator is professional software which could be used for migrating data from Microsoft 365 mailboxes, OneDrive, SharePoint, and Teams. The current product specifications include features like OAuth 2.0, Microsoft Graph API, Teams Migration API, filtering, mapping, deduplication, and incremental migration.
Key Features:
- Modern authentication
- User mapping
- Date filters
- Incremental migration
- Migration reports
- The software also provides a demo version so administrators can test the workflow before purchasing.
Best for:
- SMB and enterprise migrations
- Windows and Mac users
- Mailbox migration
- OneDrive and SharePoint migration
- Teams migration
- Duplicate data handling
2. Aryson Tenant-to-Tenant Migration
Aryson Cross Tenant Migration is another desktop-based option for Microsoft 365 tenant migration. Aryson’s current product information lists support for Exchange Online mailboxes, OneDrive, SharePoint, and Teams. It also provides automated user mapping, filtering, incremental migration, and Modern Authentication.
Advanced Features:
- Desktop-Based: Provides a GUI-based migration workflow.
- Bulk Processing: Supports migration of multiple users.
- User Mapping: Automates source-to-destination account mapping.
- Filtering: Allows administrators to select data for migration.
- Incremental Migration: Helps migrate newly added or changed data.
- Teams Support: Supports Teams data migration.
- OneDrive and SharePoint: Covers common Microsoft 365 file workloads.
Best for:
- Bulk Microsoft 365 migration
- M&A projects
- Tenant consolidation
- Organizations that need automated mapping
- Main: This software also comes with a demo version with restrictions on the number of elements that can be transferred when testing.
3. Microsoft 365 Migration Orchestrator
Migration Orchestrator for Microsoft 365 is the native product by Microsoft for orchestrating tenant-to-tenant migrations. This tool can help move supported workloads of Microsoft 365 tenants through one central location. This solution is better suited for organizations that like using the native migration tools provided by Microsoft and have the technical knowledge to set up the settings.
Why Choose This Tool:
- Native Microsoft Solution: Comes from Microsoft.
- Administrative Control: Suitable for teams managing migration through Microsoft services.
- Technical Flexibility: Can fit organizations with experienced Microsoft 365 administrators.
Best For: Organizations that prefer Microsoft’s native migration approach and have an experienced IT team to configure and manage the process.
4. BitTitan MigrationWiz
MigrationWiz by BitTitan is a cloud migration solution that is capable of migrating data between tenants of Microsoft 365. The service offers features such as batch migration, migration scheduling, and migration tracking. The service is suitable for business use in migrating data in large tenant migration projects.
Benefits:
- Cloud-Based: Migration management is handled through a cloud service.
- Batch Migration: Organize users into migration batches.
- Scheduling: Plan migration activities around business requirements.
- Migration Tracking: Monitor migration progress.
- Business-Focused: Designed for professional migration projects.
Best For: Businesses and migration teams that prefer a managed cloud service for large Microsoft 365 tenant migration projects.
5. ShareGate Migrate
The ShareGate Migrate application is also popular for migrations into Microsoft 365 from another tenant. It currently offers a downloadable Migrate application. The details provided on their site indicate compatibility with tenant-to-tenant migrations, SharePoint, Teams, OneDrive, Exchange Online, Entra ID, and many others.
Key Features:
- Teams Migration: Supports Microsoft Teams migration.
- OneDrive Support: Covers OneDrive migration.
- Exchange Online: Supports Exchange Online migration.
- Entra ID: Includes support for Microsoft identity-related migration tasks.
- Downloadable Application: Provides a locally installed Migrate application.
Best For: IT personnel involved in migrations to Microsoft 365, in which workloads like SharePoint, Teams, OneDrive, and others are critical.
6. Cloudiway Office 365 Tenant to Tenant Migration
Cloudiway is a migration solution that assists companies in migrating Microsoft 365 data from one tenant to another tenant. Cloudiway covers mailbox migration, OneDrive, SharePoint, Teams, and many other things. This tool is fit for companies dealing with big or complex tenant migration projects.
Key Features:
- Supports Microsoft 365 mailbox migration.
- Handles OneDrive data.
- Supports SharePoint content migration.
- Covers Microsoft Teams workloads.
- Helps manage several Microsoft 365 workloads.
- Designed for complex migration environments.
Best For: Organizations managing large or complex Microsoft 365 tenant migration projects involving multiple workloads.
7. Quest On Demand Migration
Quest On Demand Migration is a software product offered in the cloud, which is used for migrating Microsoft 365 data from one tenant to another. This software has been designed for large migrations that involve mergers and acquisitions.
Benefits of This Migration Tool:
- Migration is managed through a cloud platform.
- Supports Microsoft 365 tenant-to-tenant projects.
- Suitable for merger and acquisition scenarios.
- Designed for organizations combining Microsoft 365 environments.
- Focused on enterprise-scale migration requirements.
Best For: Large organizations handling mergers, acquisitions, or Microsoft 365 tenant consolidation projects.
8. Apps4.Pro Migration Manager
Apps4.Pro Migration Manager is a migration software that helps users to migrate their Microsoft 365 data from one tenant to another. The migration software includes mailbox migration, OneDrive migration, SharePoint migration, and Teams migration, along with other features such as user mapping, filtering, and incremental migration.
Advanced Features:
- Mailbox Migration: Supports Microsoft 365 mailbox migration.
- OneDrive Migration: Helps transfer OneDrive data.
- SharePoint Migration: Supports SharePoint migration.
- Teams Migration: Includes Teams migration.
- User Mapping: Maps source accounts to destination accounts.
- Filtering: Allows selective migration.
- Incremental Migration: Helps transfer newly changed data.
Best For: IT teams looking for a multi-workload Microsoft 365 migration tool with mapping, filtering, and incremental migration features.
9. CodeTwo Office 365 Migration
One product that will suit your needs quite well, particularly if the primary criterion for selection is mailbox migration, is CodeTwo Office 365 Migration. As opposed to other more general products from this list, CodeTwo Migration places much more emphasis on mailbox data than on covering all Microsoft 365 workloads.Â
Why It Stands Out:
- Focuses on Microsoft 365 mailbox data.
- Supports email transfer between environments.
- Includes calendar and contact data.
- Supports public folder migration.
- Includes archive mailbox migration.
Best For: Organizations where mailbox migration is the primary requirement and email, calendar, contacts, archive mailboxes, and other mailbox items need to be transferred.
10. Stellar Migrator for Exchange
Stellar Migrator for Exchange is a migration software intended for the transfer of mailboxes from one tenant to another in Exchange or Microsoft 365 accounts. It offers features like bulk migration, user mapping, filters, and migration monitoring. The software is best suited for business organizations requiring migration of several mailboxes.
Why It Stands Out:
- Bulk Migration: Supports migration of multiple mailboxes.
- User Mapping: Helps map source and destination users.
- Filtering: Allows administrators to control migration data.
- Migration Monitoring: Provides visibility into migration activity.
- Exchange Support: Designed for Exchange-related mailbox migration.
- Microsoft 365 Support: Can be used for Microsoft 365 mailbox migration.
Best For: Businesses that primarily need to migrate multiple Exchange or Microsoft 365 mailboxes with bulk processing, filtering, and monitoring.
Cloud vs Self-Hosted: Quick Comparison
| Factor | Cloud/SaaS Migration Tools | Self-Hosted Migration Tools |
| Software location | Runs on the provider’s cloud infrastructure | Runs on your computer, server, or VM |
| Infrastructure control | Managed by the vendor | Managed by your IT team |
| Data transfer | Usually managed through the vendor’s platform | Can transfer directly between Microsoft 365 services |
| Deployment | Usually faster to start | Requires installation and configuration |
| Security control | Depends on the vendor’s infrastructure and policies | More control over the migration environment |
| Best suited for | Teams that want a managed migration service | Organizations wanting greater infrastructure control |
| Typical use cases | Quick migrations and managed projects | Mergers, acquisitions, tenant consolidation, and controlled IT environments |
Key Benefits of Self-Hosted Migration Tools
With the self-hosting model of migration, businesses have better control over the migration application’s working environment. This kind of model can be very helpful for IT teams who have their own infrastructure and certain security needs.
- IT teams can control where the migration software is installed and operated.
- The migration application does not need to operate entirely inside a third-party hosted environment.
- Organizations can deploy the software on supported workstations, servers, or virtual machines.
- IT administrators retain control over application access, configuration, and migration operations.
- Administrators can monitor the migration environment through their own infrastructure.Â
What to Test Before a Migration Process
Never start with all users. Create a pilot group first. For example, if you have 1,000 mailboxes for different users. Include different mailbox sizes and different types of data. Test:
- Email migration
- Attachments
- Contacts
- Calendars
- Shared mailboxes
- OneDrive files
- SharePoint libraries
- Teams content
- Permissions
- User mapping
- Duplicate handling
- Incremental migration
- Migration reports
- Then compare the source and destination. If the pilot works properly, increase the migration batch size.
Conclusion
Selecting the best tenant-to-tenant migration solution is dependent on the data, migration size, and business needs. Evaluate the supported workload, authentication, mappings, filters, and reports. Perform a pilot migration prior to the full migration to ensure that everything is in order.
Frequently Asked Questions:
Q1: How much time does a migration from one tenant to another take?
The time required for the migration will depend on how much data is migrating, the speed of the internet connection, and also how the migration is being done.
Q2: Are self-hosted migration tools superior to cloud migration tools?
No. Migration tools that use self-hosting give users more control over the migration environment; migration tools using clouds provide more ease in managing. It’s your decision which of these tools fits you better.
Q3: Which tenant-to-tenant migration tools support OneDrive and SharePoint?
Tools such as SysInfo, Aryson, ShareGate, Cloudiway, Quest, Apps4.Pro, and Microsoft’s Migration Orchestrator support OneDrive and/or SharePoint migration. However, supported workloads and features can differ between tools.
Q4: How can I move multiple mailboxes between two Microsoft 365 tenants?
Set up source and target tenants with credentials. Then map the source users to destination accounts, select the mailboxes, configure migration settings, and start with a pilot batch. After testing, migrate the remaining mailboxes in batches.
Q5: How can IT administrators maintain data integrity during tenant migration?
Administrators should create a migration plan, verify user mapping, use appropriate filters, run a pilot migration, check migrated data against the source, and review migration reports. Incremental migration can also help transfer newly added or changed data before the final migration. more
