Tenant to Tenant Migration Tool for M365 & Google Workspace

Worried about downtime and data loss during a 100 TB+ tenant to tenant migration? At CloudFuze, we help enterprises migrate Microsoft 365 and Google Workspace data securely and seamlessly.

Organizations move from Microsoft 365 to Google Workspace, or vice versa, for many reasons, including mergers, acquisitions, tenant consolidation, divestitures, reorganizations, and cloud modernization. However, transferring emails, files, permissions, calendars, users, and collaboration data between tenants can be challenging very quickly.

Businesses need a proven tenant-to-tenant migration solution like CloudFuze Migrate to assess, map, migrate, monitor, and validate business data across Microsoft 365 and Google Workspace.

What Is a Tenant-to-Tenant Migration Tool?

A tenant-to-tenant migration tool helps organizations move users and business data from one cloud tenant to another.

A tenant can represent an organization’s dedicated environment within a cloud productivity platform. When businesses merge, separate business units, consolidate environments, or change cloud platforms, they may need to move data between these environments.

Depending on the project, migration can include:

A tenant to tenant migration software should do more than transfer data. It should help IT teams understand the source environment, map users and workloads, configure migration jobs, monitor progress, identify issues, and validate the destination environment.

Why Is Tenant-to-Tenant Migration Important for Enterprises in 2026?

Tenant-to-Tenant migration has become increasingly important due to enterprise mergers and acquisitions, tenant consolidations, divestitures, business restructuring, and cloud platform migrations. Since enterprises deal with growing amounts of data through Microsoft 365 and Google Workspace, it is necessary for them to have the right strategy for migrating their data while keeping collaboration smooth.

Why Is Microsoft 365 and Google Workspace Tenant Migration Complicated for Enterprises?

Tenant migration is a complicated process since it consists of live cloud environments, thousands of users, many workloads, and live business processes. The main tenant migration challenges are as follows:

• Identity/User Mapping: It is required to map users’ identities from sources to destinations in a correct manner, especially in the case of M&A deals.
• Workload Dependencies: Email, Files, Calendars, Microsoft Teams, Google Chat, and shared documents are all interconnected. Migration of one workload without taking into account the others may cause inconsistency.
• Permissions/Sharing: Ownership, permissions, metadata, version history, and sharing links should be preserved/mapped.
• API Throttling: Microsoft 365 and Google Workspace API limits can slow large migrations, making migration waves, concurrency, and delta passes important for enterprise-scale projects.
• Business Continuity: Users continue working during migration. Staged migrations and delta synchronization help keep data current while minimizing disruption.

How to Choose the Right Tenant-to-Tenant Migration Tool

Before selecting a Google Workspace or Microsoft 365 tenant to tenant migration solution, compare it against the actual requirements of the project.

The right choice depends on the organization’s migration scope, workloads, data volume, technical requirements, and business objectives.

Compare your migration requirements with CloudFuze’s enterprise migration capabilities and see how the platform fits your project.

Enterprise Scenarios for Tenant-to-Tenant Migration

The reason behind the migration often determines its scope, timeline, and technical requirements.

1. Mergers and Acquisitions

In an M&A, there can be a requirement for consolidating users, domains, email, files, and collaboration data of an acquired company running Microsoft 365 or Google Workspace into the tenant of the acquiring organization. The use of a tenant migration tool can help manage this process effectively.

2. Tenant Consolidation

Many large organizations may have more than one tenant of either Microsoft 365 or Google Workspaces due to mergers and acquisitions or having subsidiary companies in different regions. The process of tenant consolidation involves merging such tenants into one main tenant but necessitates proper planning involving many aspects.

3. Divestitures and Spin-Offs

In the course of divestiture or spin-off, there is a need to transfer some selected users, mailboxes, files, collaboration data, and permissions from the corporate tenant to a new tenant. This ensures that only the necessary information is moved.

4. Organizational Restructuring

This can be done by a company when it decides to restructure its business units, domains, environments, and/or organization. In such situations, user and workload mapping becomes crucial as there is no correlation between the destination and source structures.

Capabilities You Need to Consider When Choosing a Tenant Migration Platform

Workload coverage alone is not enough for choosing a migration platform. An enterprise IT team should consider the entire tenant migration process.

1. Microsoft 365 and Google Workspace Support

Companies operating in both environments need a platform that will support relevant Microsoft 365 and Google Workspace migration scenarios.

For Microsoft 365, it may include such scenarios as:

• Exchange Online
• OneDrive
• SharePoint Online
• Microsoft Teams

For Google Workspace, it may include such scenarios as:

• Gmail
• My Drive
• Shared Drives
• Google Calendar
• Google Chat

Multiplatform support is particularly valuable if an organization needs to migrate tenants on the same platform as well as on different platforms.

2. Cross-Platform Migration

Not all migrations are Microsoft 365 to Microsoft 365. Enterprise migrations may also include:

• Microsoft 365 to Microsoft 365
• Google Workspace to Google Workspace
• Microsoft 365 to Google Workspace
• Google Workspace to Microsoft 365

Cross-platform migration requires additional considerations since Microsoft and Google have different user, permission, file, and collaboration services management.

The migration platform should clearly outline what data and settings could be migrated from the source platform to the destination one.

3. User Mapping

Correct user mapping is an essential element of a successful tenant migration process. Rather than doing configuration for each individual account, administrators can do automated or CSV-based mapping to connect source and destination accounts.

When performing a bulk migration, user mapping may help reduce the amount of work for administrators and avoid sending data to incorrect destination accounts.

4. Pre-Migration Assessment

In order to migrate data from a production environment, IT staff will require information about that environment. The assessment can provide the following:

• Number of users
• Volume of data
• Workloads
• Large files
• Unsupported items
• Permissions problems
• Permissions problems
• User mapping requirements
• Migration exceptions

This information can then be used to define the migration scope and schedule.

5. Pilot Migration

Pilot migration is done in order to allow IT departments to verify the configuration they have in mind for the entire organization by running a test on a selected small group. The pilot migration will allow validation of such things like user mapping, email and file migration, permissions, folders, calendar data, and collaboration workload.

6. Delta Synchronization

Migration of data takes many days or even weeks of time, especially when a huge volume of data is in question. In addition, during the period of migration, users keep on creating and changing data in the source environment. Delta synchronization is used to move data changed since the last migration run.

7. Migration Monitoring and Reporting

The larger the migration, the more important, centralized visibility becomes. IT departments must have a central way of monitoring the migration status; users migrated, failed attempts, errors, data migrated, workloads processed, and other important aspects of the migration process. Central monitoring allows administrators to solve problems faster without checking migration tasks one by one.

CloudFuze Migrate: All-in-one Cross-Tenant Migration Tool for Microsoft 365 & Google Workspace

CloudFuze Migrate is an all-in-one cloud migration platform that enables organizations to plan, execute, and manage tenant migration projects across Microsoft 365 and Google Workspace from a single interface.

The migration cases include:

• Microsoft 365 to Microsoft 365
• Google Workspace to Google Workspace
• Microsoft 365 to Google Workspace
• Google Workspace to Microsoft 365
• Gemini to Gemini
• Copilot to Copilot

Based on the source, destination, and migration setup, organizations may migrate the supported workloads including Exchange Online/Outlook, OneDrive, SharePoint, Microsoft Teams, Gmail, Google Drive, and Shared Drives.

CloudFuze offers features for:

• Migration Assessment
• User Mapping
• Migration Setup
• Pilot Migration
• Migration Waves
• Delta Sync
• Migration Monitoring
• Reporting
• Migration Validation

Thus, this tenant migration tool is appropriate for enterprise-scale projects when IT needs an organized approach to migration instead of the script-based one.

CloudFuze for Microsoft 365 Tenant to Tenant Migration

Microsoft 365 tenant-to-tenant migration is often required following acquisitions, tenant consolidation, restructuring, or organizational changes.

Depending on the project, organizations may need to migrate data across:

• Exchange Online
• OneDrive
• SharePoint Online
• Microsoft Teams

CloudFuze provides a centralized environment where administrators can configure migration requirements, map source users to destination users, execute migration jobs, and monitor progress.

Microsoft 365 Migration Use Cases

CloudFuze can support scenarios such as:

• Microsoft 365 tenant-to-tenant migration
• Microsoft 365 tenant consolidation
• M&A migrations
• Corporate restructuring
• Divestitures
• Domain changes
• Large-scale Microsoft 365 migrations

The exact workloads and capabilities available depend on the source, destination, and migration configuration.

CloudFuze for Google Workspace Tenant Migration

Google Workspace tenant migrations can involve Gmail, Google Drive, Shared Drives, Calendar, and other supported data.

As with Microsoft 365, organizations need to plan user mapping, workload scope, permissions, migration waves, and validation before moving production data.

CloudFuze provides a centralized platform for organizing Google Workspace migration projects, configuring migration jobs, monitoring progress, and identifying migration issues.

Google Workspace Migration Use Cases

Organizations can use a Google Workspace migration solution for scenarios such as:

• Google Workspace tenant-to-tenant migration
• Google Workspace consolidation
• M&A
• Organizational restructuring
• Domain migration
• Cloud environment changes
• Large-scale Google Workspace migrations

Tenant-to-Tenant Migration for 100 TB+ Enterprise Environments

Large-scale migrations of 100 TB+ of data in Microsoft 365 and Google Workspace involve migration of workloads like Exchange Online, OneDrive, SharePoint, Teams, Gmail, and Google Drive. Large migrations also involve considerations for API throttle management, permissions, user mapping, migration speed, and changes in data during migration.

CloudFuze Migrate is a tool that helps plan the process of large migrations by way of migration waves, delta synchronization, centralized monitoring, user mapping, and post-migration validation.

AI Context Migration During Tenant Migration

With the adoption of Microsoft 365 Copilot and Google Gemini, enterprises now have more considerations when performing tenant migrations, and these include not just business data but also AI context.

Enterprises must identify whether the AI context data needs to be retained or migrated according to their platforms, policy and requirements. CloudFuze can help organizations perform their tenant migrations with regards to AI context migration according to their needs.

Tenant migration involving Copilot and Gemini? Discuss your requirements with CloudFuze.

Microsoft 365 vs. Google Workspace Tenant Migration

Although Microsoft 365 and Google Workspace provide similar productivity capabilities, their services and data structures are different.

This difference matters when planning a cross-platform migration. A migration strategy should account for how the source platform stores and manages data and how that data will be represented in the destination environment.

Security Factors for Cross-Tenant Transfer

Tenant migration contains business-sensitive information; therefore, you must consider security before choosing a migration platform.

IT professionals need to consider:

• Authentication process
• Encryption
• Access control
• Administrative privileges
• Architecture for managing data
• Audit capability
• Compliance requirements like GDPR, SOC 2 Type 2, ISO 270001
• Data retention policy

OAuth authentication will allow an organization to protect users’ passwords from being shared by using a migration platform. Security needs to be considered in relation to the organization’s policy and relevant regulatory requirements.

For multi-geo migration, you can read our blog on Multi-Geo Microsoft 365 Tenant Migration from US To UK Region.

What are the advantages of the CloudFuze Tenant-to-Tenant Migration tool compared to other enterprise migration tools?

CloudFuze is designed for large tenant migrations and can migrate Microsoft 365, Google Workspace, and cross-platform tenants. CloudFuze features include user mapping, permission preserving, migration assessment, delta sync, migration monitoring, and support for complex enterprise migration projects. When comparing CloudFuze to other enterprise migration platforms, enterprises should consider workload compatibility, scalability, permission preservation, API support, reporting, security, migration, and managed services.

What is the recommended best practice when using the CloudFuze Tenant-to-Tenant Migration Tool in an enterprise environment?

Enterprises should start with a migration assessment and create an inventory of users, workloads, permissions, and data volumes. Enterprises need to validate user mappings, conduct a test migration, and create user groups for controlled migration waves. Enterprises must also think about API throttling, delta synchronization, monitoring, migration validation, and roll-back and cut-over strategies. A phased approach will help mitigate risks during migration.

What are the next steps once you have done the tenant-to-tenant migration with CloudFuze?

Once the migration is completed, enterprises need to do post-migration validation, validate users, permissions, files, email, collaboration workloads, and critical business data. Enterprises also need to look at migration reports to resolve any remaining migration errors. Afterward, administrators can do the final cut-over, deprovision legacy workloads where needed, and update documentation and governance policies.

Let’s Connect!

CloudFuze brings migration assessment, user mapping, execution, monitoring, delta synchronization, and validation into a centralized platform for supported Microsoft 365 and Google Workspace migration scenarios.

Ready to simplify your next tenant migration? Connect with the experts to explore CloudFuze Migrate for Microsoft 365 and Google Workspace.

Frequently Asked Questions

1. What is a Microsoft 365 tenant migration?

Microsoft 365 tenant migration refers to the migration of users, data, and supported workloads from one Microsoft 365 tenant to another. This kind of migration is common during M&A, tenant consolidation, restructuring, and organizational changes.

2. What is a Google Workspace tenant migration?

Google Workspace tenant migration refers to the migration of users and supported data from one Google Workspace environment to another. Depending on the nature of the migration project, this includes Gmail, Google Drive, Shared Drives, Calendar, and other supported data.

3. Does CloudFuze provide migration between Microsoft 365 and Google Workspace?

CloudFuze provides services for migrating data between Microsoft 365 and Google Workspace, as well as other cross-platform migration solutions. The available workloads and capabilities will vary depending on the source, destination, and migration setup.

4. What data can be migrated between Microsoft 365 tenants?

Depending on the migration setup, a Microsoft 365 migration can involve the supported workloads like Exchange Online, OneDrive, SharePoint Online, and Microsoft Teams.

5. What data can be migrated between Google Workspace tenants?

Depending on the migration setup, a Google Workspace migration can include the supported workloads like Gmail, Google Drive, Shared Drives, and Calendar.

6. Why is User Mapping an important step in the migration of tenants?

User mapping is used to link the source account to its corresponding destination account. Proper user mapping ensures that the data is being moved to the right destination user.

7. What are the important features and functions of the CloudFuze Tenant to Tenant Migration Tool?

CloudFuze performs Microsoft 365 and Google Workspace tenant-to-tenant migration of emails, OneDrive, SharePoint, Teams, Google Drive, Shared drives, and other collaborative applications. The important functions of the software include user mapping, pre-migration analysis, pilot migration, permissions and metadata preservation, migration in batches, delta synchronization, central management, reporting, and auditing.