How long does a GCC High migration take?
Typical mid-market migrations run 8 to 16 weeks from eligibility validation to final cutover, depending on user count, data volume, third-party integrations, and whether identity is greenfield or hybrid AD.
Do we have to move everyone to GCC High?
No. Most contractors move only the users, mailboxes, and workloads that actually touch CUI, keeping the rest of the business on commercial M365. We size the licensing mix so the enclave stays small and the assessment surface stays manageable.
What's the difference between GCC and GCC High?
GCC is FedRAMP Moderate, designed for federal, state, local, and tribal governments and their contractors handling non-CUI government data. GCC High is FedRAMP High / DoD IL5, required when handling CUI, ITAR, or DFARS 252.204-7012 covered defense information. Most DIB contractors need GCC High; many state and local contractors only need GCC.
Can you also handle Azure Government, not just M365?
Yes. We design and deploy Azure Government landing zones, Azure Virtual Desktop, ExpressRoute / point-to-site remote access, and database migrations (SQL, PostgreSQL, MySQL) so the whole CUI workflow — not just mail and files — sits inside the accredited boundary.
Can we keep our existing email address?
Yes. We preserve primary SMTP addresses through the cutover using coexistence, split-domain mail flow, and DNS sequencing so external senders and recipients see no disruption.
What about our Google Workspace tenant?
We migrate mail, calendar, contacts, and Drive content from Google Workspace into GCC High mailboxes, OneDrive, and SharePoint, preserving permissions and folder structures.
Does GCC High have every feature of commercial M365?
No. Feature parity trails commercial by 6 to 18 months in some areas, and some third-party apps are not authorized. We inventory the gaps up front and plan around them so you're not surprised post-cutover.