Migrating a 107GB Gmail Mailbox with LAO: What Microsoft's Docs Don't Tell You
Migrating a single Accounts Payable mailbox from Google Workspace to Exchange Online should have been the easy part of a larger phased migration. It wasn’t. The mailbox was 100GB+ with 600,000+ items, which put it past Exchange Online’s standard migration path and into Large Archive Onboarding (LAO) territory. LAO is the only supported mechanism for migrating a mailbox this size from Gmail while splitting content between primary and archive by date or folder. ...