The challenge
Blue Ant Media, a global media company headquartered in Toronto, ran its day-to-day collaboration on Google Workspace while more of its business, partners, and production workflows expected Microsoft 365. The estate spanned thousands of accounts, dozens of custom domains across sub-brands, years of recurring calendar history, and shared drives holding production data.
Running two platforms at once carried duplicate licensing, split identity, and a support burden that grew with every new hire - and the move could not interrupt live broadcast and production schedules. Every mailbox, meeting series, file, and application sender had to land on Microsoft 365 with its history intact, on a timeline the business could absorb.
Our approach
BITSUMMIT ran the migration as a staged program, moving each workload only after its path had been proven.
Discovery that mapped the estate
The team inventoried users, domains, shared drives, calendar patterns, and the application senders that quietly depended on the old platform, then sequenced the migration around what the discovery data showed.
Mail, calendars, and files with history preserved
Gmail labels were recreated as Outlook categories across hundreds of users, close to 11,000 Google Meet and Zoom join links were repaired across 230 users so standing meetings kept working, and room and resource calendars were rebuilt series-aware so bookings survived the move. OneDrive moved and was verified file by file, with de-duplication removing more than 30,000 duplicate copies along the way.
Domains consolidated under one tenant
Fifty custom domains were verified on the Microsoft 365 tenant, bringing years of sub-brand mail under one roof.
Cutover and stabilization
The final cutover completed in July 2026, followed by a close-out package covering the estate, storage strategy, and a health check of the new environment against the CIS Microsoft 365 Foundations benchmark.
The outcome
Blue Ant Media's corporate estate now runs on a single, governed Microsoft 365 tenant. Fifty custom domains are verified, OneDrive migrated with zero verify-failures across the fleet, and roughly 98 percent of mailboxes carried their full history at close-out, with the remainder completing backfill.
IT leadership closed the project with a benchmark-based health check of the new tenant and a storage strategy for archival data, giving the team a clear operating picture of the environment it now runs.
