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Microsoft 365 Government Cloud // Microsoft 365 Microsoft 365 for Government Cloud A familiar cloud productivity platform, licensed and managed the right way. Microsoft 365 for Government Cloud delivers a familiar productivity platform and secure collaboration tools, with an added layer of security built for government agencies and organizations across the Defense Industrial Base (DIB) that handle sensitive data. It's delivered as a fully managed SaaS platform, backed by compliance commitments that support FedRAMP, ITAR, CJIS, HIPAA, GDPR, and CMMC requirements. The hard part isn't the platform. It's figuring out whether you need GCC or GCC High, how to license it correctly, and how to get your tenant configured and managed without slowing your team down. That's where Sentinel Blue comes in.
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GCC + GCC High Licensing guidance, migration, and management
AOS-G Navigation Help finding the right authorized licensing path
CMMC-Ready Environments configured to support CMMC Level 2
What Is Microsoft 365 for Government Cloud?
Microsoft 365 for Government Cloud offers a familiar Microsoft 365 experience, with additional security and compliance controls layered on top for organizations that handle sensitive or regulated data. It is not a single product. It is a family of environments, each built for a different compliance need, and feature availability can lag behind Commercial, so it's worth confirming specific capabilities before you migrate. Choosing the right tier matters. Selecting a higher tier than you need adds cost and complexity. Selecting a lower tier than you need can leave sensitive data in an environment that cannot be defended during an assessment. Here's how the environments compare:
Environment Built For Compliance Fit
Microsoft 365 Commercial General business operations, no CUI or export-controlled data Not appropriate for CUI once DFARS cloud requirements apply.
Microsoft 365 GCC U.S. federal, state, local, and tribal governments and their contractors Meets FedRAMP Moderate–equivalent requirements and supports many CUI scenarios, but Microsoft's DFARS 252.204-7012 incident-reporting and forensic-access commitments have historically applied to GCC High and DoD, not GCC.
Microsoft 365 GCC High Organizations handling CUI, ITAR-controlled data, or export-controlled information Built for DFARS 252.204-7012, NIST SP 800-171, and CMMC Level 2, with U.S. sovereign infrastructure and U.S. persons–only support.
Understanding GCC, GCC High & Licensing
Microsoft 365 licensing for GCC High cannot be purchased directly from Microsoft. It has to be purchased through an authorized Microsoft partner, and how you buy it depends on the size of your organization and your existing Microsoft agreements.
Licensing Path CSP Cloud Solution Provider. The standard path for Microsoft 365 GCC, sold through an authorized Microsoft partner with flexible, usage-based licensing. GCC High is not available through the standard CSP model.
Licensing Path AOS-G Agreement for Online Services – Government. Lets organizations with fewer than 500 users purchase GCC High through an authorized partner without signing a full Microsoft Enterprise Agreement.
Licensing Path Enterprise Agreement The traditional path for larger organizations, typically 500 or more users, purchasing GCC High through a Licensing Solution Provider (LSP) under a Microsoft Enterprise Agreement (EA).
Sentinel Blue Helps You Navigate the Path Most small and mid-sized defense contractors qualify for GCC High through the AOS-G program, which means you do not need a full Enterprise Agreement to get there. Sentinel Blue helps you confirm eligibility, determine whether GCC or GCC High is the right fit, and guide you through licensing, provisioning, and setup so nothing gets stuck in the paperwork.
The Government Cloud Platform
Microsoft 365 is one piece of a larger Government Cloud environment. Sentinel Blue works across the full Microsoft government cloud platform, so your productivity tools, infrastructure, and security tooling are built and managed together instead of as disconnected pieces.
You Are Here Microsoft 365 Productivity and collaboration tools licensed and configured for GCC or GCC High.
Government Cloud GCC High The environment built for CUI, ITAR, and export-controlled data. Learn More → Government Cloud Azure Government A dedicated, isolated cloud infrastructure for government workloads. Learn More → Government Cloud Microsoft Sentinel Cloud-native SIEM and security monitoring for your Government Cloud environment. Learn More →
Not Sure Which Government Cloud Environment You Need? Get a quote and we'll help you figure out the right fit before you buy anything.
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Foundational Benefits
Partnering with Microsoft on Government Cloud infrastructure, platform, and toolkit gives your organization a secure, compliant, and scalable environment tailored to your needs, without giving up the tools your team already relies on.
Regulatory compliance support for FedRAMP, ITAR, CJIS, HIPAA, GDPR, and CMMC
Data protection built around U.S. data residency and controlled access
Government-specific services not available in commercial Microsoft 365
Advanced analytics and reporting across your environment
Scalability and flexibility as your organization and contracts grow
Hybrid cloud capabilities for organizations still operating on-premises systems
What Sentinel Blue Provides
Sentinel Blue supports the full lifecycle of Microsoft 365 Government Cloud adoption for the Defense Industrial Base, from figuring out which environment you need through licensing, migration, configuration, and ongoing managed IT and security operations.
GCC vs. GCC High assessment and licensing guidance
AOS-G eligibility and authorized partner licensing support
Cloud migration and tenant setup from Microsoft 365 Commercial, on-premises, or another cloud provider
Tenant configuration, identity, and access management
Security hardening aligned to CMMC and NIST SP 800-171
Copilot readiness guidance for GCC and GCC High environments
Ongoing managed operations, monitoring, and support
Compliance documentation support tied to your Microsoft 365 environment
This is not a one-time licensing transaction. GCC and GCC High environments need to be configured, governed, and maintained as part of a broader cybersecurity and compliance program.
Frequently Asked Questions
What is Microsoft 365 GCC High? Microsoft 365 GCC High is a government cloud environment built for organizations that handle Controlled Unclassified Information (CUI), ITAR-controlled data, or are subject to DFARS 252.204-7012, NIST SP 800-171, or CMMC compliance requirements.
What is the difference between GCC and GCC High? GCC (Government Community Cloud) already meets U.S. data residency requirements on Azure Commercial infrastructure and supports many CUI scenarios for U.S. federal, state, local, and tribal governments and their contractors. GCC High adds U.S. sovereign infrastructure (Azure Government), DoD Impact Level 4/5 alignment, U.S. persons–only access and support, and the controls needed for ITAR and export-controlled data.
Can I buy Microsoft 365 GCC High directly from Microsoft? No. GCC High isn't self-service. It requires eligibility validation and is purchased through an authorized partner: AOS-G (Agreement for Online Services – Government) for organizations under 500 users, or a Licensing Solution Provider (LSP) under a Microsoft Enterprise Agreement for larger organizations.
What is AOS-G? AOS-G stands for Agreement for Online Services – Government. It is a Microsoft licensing program that allows organizations with fewer than 500 users to purchase GCC High through an authorized partner without signing a full Microsoft Enterprise Agreement.
Is Microsoft Copilot available in GCC High? Yes. Microsoft has expanded Copilot availability to both GCC and GCC High environments, allowing eligible organizations to use AI-powered productivity tools within a compliant cloud, provided permissions and data access are configured appropriately. Not all Copilot capabilities have reached parity with Commercial, and Security Copilot is not yet available in U.S. Government cloud environments.
Does Microsoft 365 GCC High guarantee CMMC compliance? No. GCC High provides a stronger, more defensible cloud foundation, but the organization still needs properly implemented controls, governance, documentation, and monitoring to achieve and maintain a CMMC Level 2 status.
Get Started Get Your Microsoft 365 Quote Tell us a bit about your organization and a Sentinel Blue expert will follow up to help determine whether GCC or GCC High is the right fit, walk through licensing options, and put together a quote. No pressure, no obligation. Just a straight answer on what you actually need.
GCC and GCC High licensing guidance
AOS-G eligibility review
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Get Started Ready to Get Microsoft 365 Right? Whether you're licensing GCC High for the first time, migrating from commercial Microsoft 365, or inheriting an environment that was never configured correctly, Sentinel Blue can help you get it right and keep it that way.
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