Microsoft publishes official, step-by-step deployment guides for nearly every Modern Work service, but they’re scattered across Microsoft Learn, the Microsoft 365 Setup Portal, and the admin center. This page organizes the ones worth starting from by practice area, and covers what actually changes if you’re deploying into GCC, GCC High, or DoD instead of commercial.

Every guide below is a Microsoft resource, not something written here. Most are freely viewable; a handful of the more advanced ones live only in the Microsoft 365 admin center and require signing in with an appropriate admin role. Where Microsoft offers both a public Setup Portal version and an admin-center version of the same guide, we’ve linked whichever is easiest to reach.

Environments and licensing

Before you start any of the guides below, confirm which Microsoft cloud environment you’re actually deploying into. The guidance is broadly the same across environments, but availability, timing, and a few features are not.

Commercial (worldwide) is the environment nearly every organization outside the U.S. public sector uses. It gets new features first, and this is what the guides below assume unless noted otherwise.

GCC (Government Community Cloud) is for U.S. federal, state, local, and tribal agencies, and contractors handling data subject to U.S. government requirements. It has U.S.-only data residency and aligns with FedRAMP Moderate. Feature releases typically lag commercial.

GCC High adds isolation for organizations handling Controlled Unclassified Information (CUI) or subject to DFARS and ITAR requirements, most commonly Defense Industrial Base contractors. Feature availability lags further behind GCC.

DoD is the most restricted environment, built exclusively for the U.S. Department of Defense and its mission partners, assessed against DoD Impact Level 5 controls.

One practical consequence for this page specifically: Microsoft’s advanced deployment guides, the interactive checklists linked throughout, are not available in GCC High, DoD, or Microsoft 365 operated by 21Vianet. If that’s your environment, use the Microsoft Learn documentation links instead and verify feature parity before you plan a rollout around any specific capability.

Deployment guides by practice area