Migrating between Google Workspace and Microsoft 365 is one of the most common projects we handle, and it goes both ways. Some teams standardise on Microsoft 365 after an acquisition; others move to Google Workspace for simpler collaboration. Either direction, the goal is the same: move everything cleanly while your team keeps working.
What Actually Gets Migrated
- Email & mailboxes — messages, folders, and labels mapped between Gmail and Exchange Online
- Files — Google Drive and Shared Drives to OneDrive and SharePoint (or the reverse)
- Calendars & contacts — including recurring events and shared calendars
- DNS & mail flow — MX, SPF, DKIM, and DMARC reconfigured for the new platform
The Zero-Downtime Approach
- Audit users, mailbox sizes, and data volume to size the migration.
- Provision the destination tenant, users, and licenses ahead of time.
- Pre-sync data in the background while the old system stays live.
- Cut over MX records during a low-traffic window, then do a final delta sync.
Done right, users simply sign in to the new platform the next morning with everything in place. If you're planning a move in either direction, a short discovery call is the fastest way to get a realistic timeline.
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