GOOGLE WORKSPACE TO MICROSOFT 365 MIGRATION
Prepare Your Google Workspace Before You Move to Microsoft 365
THE MIGRATION GAP
What You Can Access Isn’t Always What You Can Migrate.
Before moving to Microsoft 365, you need a clear picture of what your organization actually owns and controls in Google Workspace. External ownership, shared-in files, Group-based access, and existing sharing can all affect what happens next.
Drive Ownership
Identify who owns files across My Drive, Shared Drives, suspended accounts, and external identities.
Sharing & Access
Review external sharing, Group-based permissions, public links, and delegated access before the move.
Shared-In Files
Separate externally owned content from data your organization actually controls and can migrate.
GOOGLE DRIVE → MICROSOFT 365
Drive Structure Doesn’t Translate 1:1.
My Drive, Shared Drives, Groups, permissions, and external access all need to be mapped to the right OneDrive or SharePoint destination.
Google Workspace
- My Drive
- Shared Drives
- Google Groups
- External collaborators
Microsoft 365
- OneDrive
- SharePoint
- Microsoft 365 Groups
- Destination access
HOW GAT+ HELPS
Build Your Migration Plan on Real Google Workspace Data
Don’t plan your migration from user lists and storage totals alone. GAT+ gives your team detailed visibility into Drive ownership, sharing, permissions, Shared Drives, users, Groups, and external dependencies before anything moves.
Google Workspace
Audit Files & Ownership
See what users own across My Drive and Shared Drives.
Review Sharing & Access
Identify internal, external, and Group-based permissions.
Map Drive Structures
Understand folder hierarchies and Shared Drive relationships before planning destinations.
Export Migration Data
Export file metadata, ownership, and sharing details for migration planning.
We’re proud to announce that GAT+ is now certified with ADA CASA Tier-3. This certification underscores our commitment to excellence, reliability, and compliance with the highest industry standards.
MIGRATION PROCESS
Audit Before. Validate After.
Keep the migration plan focused on the source environment, the transfer, and what remains when it is complete.
GAT+ gives you visibility before and after the transfer. Your selected migration platform moves the data.
POST-MIGRATION VALIDATION
Don’t Retire Google Workspace Until You’ve Checked What Remains.
Use GAT+ to review the source environment again after migration, identifying remaining files, unexpected ownership, unresolved access, and accounts that are still active.
Validation check
FAQs
Google Workspace to Microsoft 365 Migration
Does the Google Workspace Admin Console provide enough reporting for a Microsoft 365 migration?
Google Admin provides useful activity and security reporting, but migration planning often requires a deeper view of file ownership, Drive structures, sharing relationships, external access, and user-level dependencies. GAT+ helps build that source-environment inventory before data is moved.
How do I migrate Google Drive files to OneDrive or SharePoint without losing access?
Before migration, review who owns each file, how it is shared, which Groups provide access, and whether external collaborators should retain access. This gives you a clear permissions map to compare with the destination after migration.
Do I need another tool to transfer the data?
Yes. GAT+ supports the audit, planning, and validation stages, while your selected migration platform handles the actual transfer. Microsoft Migration Manager can move Google Workspace content into OneDrive and SharePoint.
What should I audit before migrating Google Workspace to Microsoft 365?
Review users, suspended accounts, My Drive ownership, Shared Drives, Google Groups, external sharing, shared-in files, delegated access, and permissions. This helps identify dependencies that may need to be mapped or addressed before migration.
What happens to externally owned or shared-in Google Drive files?
Access to a file does not mean your organization owns it. Identify files owned by suppliers, personal Gmail accounts, former employees, or other Workspace domains separately so you can decide whether access should continue or whether your organization needs its own managed copy.
How do I know if the migration was successful?
Compare the destination with the source before retiring Google Workspace. Check that expected users and files are present, ownership and permissions are correct, Shared Drive relationships are accounted for, and legitimate external access still works.
Start With a Clear View of
Google Workspace
Use GAT+ to audit ownership, Drive structures, sharing, permissions, and dependencies before your migration platform moves the data to Microsoft 365.
