Microsoft 365 to Google Workspace: Migrating in Reverse
The reverse migration has its own gotchas. Here is how to move from Microsoft 365 to Google Workspace cleanly.
Most migration guides assume you are heading toward Microsoft 365. Plenty of organizations go the other way, consolidating on Google Workspace for simplicity, cost, or a browser-first culture. The playbook mirrors the forward migration, but the gotchas are different.
Map the structure differences
SharePoint sites and Teams do not have a clean one-to-one equivalent in Google Workspace. Plan how SharePoint document libraries become Shared Drives, and how Teams channels map to a mix of Google Chat spaces and Shared Drives. Decide this before migrating, not during.
The data move
- Identity. Provision Google Workspace accounts and choose your SSO model up front.
- Mail, calendar, contacts. Google’s migration tooling pulls from Exchange Online in batches. Validate recurring meetings and delegated calendars carefully, since these translate poorly.
- Files. OneDrive and SharePoint content moves to Drive and Shared Drives. Re-map permissions intentionally rather than trusting an automatic translation.
Mind the application layer
Line-of-business apps that authenticated against Entra ID need to be repointed at Google as the identity provider. Macro-heavy Excel workbooks and Access databases often have no clean Google equivalent and need a plan of their own.
Same discipline, mirror image
Inventory, coexistence, wave-based cutover, a rollback at every step, and real user communication apply exactly as they do in the forward direction. The destination changes; the discipline does not. Either way, the goal is a migration your team barely notices.