If your organization handles Controlled Unclassified Information (CUI) for the Department of Defense, the cloud platform you choose isn’t just an IT decision — it’s a compliance decision. The wrong choice can mean failed assessments, lost contracts, and months of rework. The right choice can simplify your path to CMMC Level 2 certification, reduce your security tooling costs, and give your assessor exactly what they need to see.
At Intech Hawaii, we’ve evaluated every major option and built CMMC-compliant enclaves on several of them. In our experience, Microsoft Azure Government paired with Microsoft 365 GCC High consistently delivers the strongest combination of compliance coverage, integrated security, and practical usability for defense contractors. Here’s why — and how the alternatives compare.
The Landscape: What Are Your Options?
When defense contractors look for a cloud platform to handle CUI, the most discussed choices are:
- Microsoft 365 Commercial (standard business licenses)
- Microsoft 365 GCC (Government Community Cloud)
- Microsoft 365 GCC High on Azure Government
- AWS GovCloud (US)
- Google Workspace (including Google Assured Workloads)
Each of these platforms can theoretically support some level of government compliance. But “theoretically” and “practically” are very different things when a C3PAO assessor is reviewing your environment.
Why Commercial Microsoft 365 Doesn’t Work for CUI
Let’s start with the most common mistake we see: defense contractors running CUI on standard commercial Microsoft 365 licenses.
Commercial Microsoft 365 and GCC High look similar on the surface — same apps, same interface. But the underlying infrastructure is fundamentally different. Commercial Microsoft 365 lacks FIPS 140-2 validated encryption, does not operate in a U.S. sovereign cloud, does not restrict support staff to U.S. citizens, and cannot meet DFARS 252.204-7012 paragraphs (c) through (g).
Using commercial Microsoft 365 for CUI is automatically non-compliant, regardless of how strong your security policies are. With CMMC enforcement now active, remaining on commercial Microsoft 365 while handling CUI puts your contracts and your SPRS score at risk.
What Makes GCC High Different
Microsoft 365 GCC High runs entirely within Azure Government infrastructure—a physically separate set of U.S.-based data centers operated exclusively by screened U.S. citizens. This isn’t a configuration overlay on top of commercial cloud; it’s a distinct environment purpose-built for the defense industrial base.
GCC High holds FedRAMP High authorization, DoD SRG Impact Level 5 (IL5) provisional authorization, and is aligned with DFARS 7012, ITAR, and NIST 800-171. For organizations pursuing CMMC Level 2, GCC High is the only Microsoft cloud environment that satisfies all of these requirements out of the box.
Key characteristics that matter for CMMC:
- U.S. sovereign cloud. All data is stored and processed in U.S.-only, screened data centers.
- U.S. person access only. All operational staff who can access tenant data are U.S. citizens who have completed background investigations.
- FIPS 140-2 validated encryption. Data at rest and in transit meets federal cryptographic standards.
- DFARS 7012 (c)–(g) support. Incident reporting, forensic analysis, and media preservation requirements are natively supported.
- Isolated identity layer. GCC High runs its identity management within Azure Government, adding separation from the commercial cloud.
The Integrated Security Ecosystem
This is where Microsoft pulls ahead of every other option. GCC High doesn’t just provide a compliant place to store files—it delivers a unified security and compliance platform that maps directly to NIST 800-171 controls.
Identity and Access Control
Microsoft Entra ID (formerly Azure AD) in the government cloud provides conditional access policies, multi-factor authentication, privileged identity management, and role-based access control. These directly address NIST 800-171 access control requirements (AC family) without third-party tools.
Endpoint Management
Microsoft Intune in GCC High provides mobile device management (MDM) and mobile application management (MAM), allowing you to enforce compliance baselines, restrict access to managed devices, and ensure encryption across all endpoints. In our enclave deployments, we use Intune compliance policies as a gate—if a device doesn’t meet our hardening baseline, it simply cannot connect to the Azure Virtual Desktop session.
Threat Protection
This gives you advanced endpoint detection and response (EDR), email security, and identity threat detection in a single integrated stack—mapped to the same tenant and the same compliance boundary. Leveraging these native capabilities provides a strong foundation for a comprehensive cybersecurity strategy that goes beyond just checking compliance boxes.
Data Protection and Classification
Microsoft Purview provides sensitivity labeling, Data Loss Prevention (DLP), information barriers, eDiscovery, and advanced audit capabilities. For CMMC, this means you can automatically classify CUI, prevent it from being shared outside the enclave, and maintain the audit trail assessors require.
Compliance Management
Microsoft Compliance Manager includes built-in assessment templates for NIST 800-171 and CMMC, giving you a real-time compliance score and a prioritized task list for closing gaps. This is not a replacement for a proper gap assessment conducted through dedicated compliance services, but it’s an incredibly useful tool for ongoing monitoring and evidence collection.
The point is this: with GCC High, a single vendor provides your productivity suite, identity management, endpoint security, threat protection, data classification, DLP, audit logging, and compliance scoring—all within the same compliant boundary. No other platform offers this level of integration for the defense industrial base.
How Google Workspace Compares
Google Workspace is a capable productivity platform, and it has made strides toward government compliance. In 2022, a Google Workspace implementation earned a DoD Impact Level 4 (IL4) authorization, and a C3PAO issued a letter of attestation confirming the platform’s ability to satisfy NIST 800-171 requirements.
However, there are significant practical limitations:
- No built-in compliance features for CMMC. Google Workspace relies heavily on third-party integrations and additional security tools to meet government requirements. Features like CASB, endpoint DLP, sensitivity labeling, compliance management, attack simulation training, and records management all require third-party add-ons.
- Limited ITAR support. Prior to December 2019, Google explicitly advised against using their platform for ITAR data. Since then, compliance is possible but requires Google Assured Workloads, Client-Side Encryption (CSE), and customer-managed key management.
- No dedicated government cloud equivalent to GCC High. Without deploying Google Assured Workloads, organizations are limited to a DoD IL2 environment.
- Higher total cost of ownership. While Google Workspace lists at roughly $30 per user per month, the additional tools needed to close compliance gaps—CASB, SSO for on-prem apps, endpoint DLP, records management, and more—add up quickly.
- Greater administrative burden. Compliance management in Google Workspace requires extensive manual configuration and monitoring, whereas Microsoft 365 automates many of these processes natively.
For organizations already deeply invested in Google’s ecosystem, switching to Microsoft can feel daunting. But the reality is that Microsoft 365 GCC High eliminates the need for the patchwork of third-party tools Google requires, resulting in lower complexity, lower long-term cost, and a cleaner compliance story for your assessor.
How AWS GovCloud Compares
AWS GovCloud (US) is a strong infrastructure-as-a-service platform. It holds FedRAMP High authorization, supports DoD IL2, IL4, and IL5, and meets ITAR requirements. For organizations running custom applications, databases, or manufacturing systems that need a compliant hosting environment, AWS GovCloud is a legitimate option.
Where AWS GovCloud falls short for most defense contractors is the productivity and collaboration layer:
- No native productivity suite. AWS GovCloud provides infrastructure—compute, storage, networking—but it does not include email, document collaboration, device management, or the unified security stack that Microsoft bundles into GCC High. You’ll need to layer on separate tools for those functions.
- More limited AI capabilities. As organizations begin exploring AI assistants and copilot tools for productivity, AWS GovCloud’s AI offerings are more limited than what’s available in Azure Government.
- Identity is handled differently. AWS uses IAM for identity management, which is powerful but requires more custom configuration compared to Entra ID’s out-of-the-box conditional access and compliance integration.
- No equivalent to Compliance Manager. AWS offers compliance automation tools like Audit Manager, but they don’t provide the same NIST 800-171/CMMC-specific scoring and task management that Microsoft’s Compliance Manager delivers.
For organizations that need both compliant infrastructure and a compliant productivity platform, a common pattern is to use GCC High for email, collaboration, and endpoint management while using AWS GovCloud for specialized workloads like manufacturing systems or custom applications. But for the core CMMC enclave—where users handle CUI daily—Azure Government and GCC High provide a more complete, integrated solution.
What We’ve Seen in Practice at Intech Hawaii
We’ve built CMMC enclaves on Azure Government and GCC High for defense contractors across Hawaii and the broader Pacific region, including compliance solutions for organizations in Guam. The pattern that consistently works best is straightforward:
Azure Virtual Desktop (AVD) in Azure Government serves as the enclave access point. Users connect to virtual desktops running in the government cloud, and CUI never touches a local device. If a laptop is lost or stolen, there’s no CUI on it.
Microsoft 365 GCC High provides Exchange Online, SharePoint, Teams, and OneDrive—all within the compliant boundary. Users collaborate, email, and store documents without leaving the enclave.
Microsoft Intune enforces device compliance. Only corporate-managed, encrypted, patched devices can establish an AVD session. A personal laptop or an unmanaged device is blocked at the door.
Microsoft Defender and Purview provide the EDR, DLP, and audit logging that CMMC Level 2 requires — without bolting on third-party tools that add cost and complexity.
For one of our recent engagements, a Hawaii-based contractor with six CUI users needed an enclave that included four office workers and two CAD engineers. We stood up the entire environment — AVD sessions, GCC High tenant, Intune policies, Defender, Purview, network segmentation, and documentation — in a matter of weeks. The client went from scattered CUI handling across commercial tools to a clean, assessable enclave with a clear security boundary.
Cost: The Real Picture
GCC High licensing is more expensive per user than commercial Microsoft 365 or Google Workspace. There’s no getting around that. But cost needs to be evaluated in terms of total cost of ownership, not just the line item on a licensing sheet.
With GCC High, the licensing cost includes your productivity suite, identity management, device management, endpoint security (EDR), email security, DLP, sensitivity labeling, eDiscovery, advanced audit, and compliance scoring. With Google Workspace or a bare AWS GovCloud deployment, you’re paying for each of those capabilities separately—and spending engineering hours integrating them.
For an enclave with a small number of users—which is the reality for most small and mid-sized defense contractors—the per-user premium for GCC High is far outweighed by the reduction in third-party licensing, integration effort, and administrative overhead. Partnering with an experienced provider for ongoing managed IT services further reduces this burden, ensuring your enclave remains compliant without exhausting your internal resources.
The Bottom Line
No cloud platform is a silver bullet for CMMC compliance. You still need proper scoping, solid architecture, user training, and thorough documentation. But the platform you build on determines how much of that work is streamlined versus how much you’re stitching together from scratch.
Microsoft Azure Government and GCC High give defense contractors the most complete, integrated, and assessor-friendly foundation available today. The security tools are built in, the compliance mappings are native, the identity and endpoint management are unified, and the environment is purpose-built for organizations handling CUI.
If you’re evaluating cloud platforms for your CMMC enclave or considering a migration from commercial Microsoft 365, Google Workspace, or a patchwork of tools, contact Intech Hawaii for a consultation. As Hawaii’s only CMMC Level 2 certified MSP, we can help you design and deploy an Azure Government environment that meets your compliance requirements and fits your budget.
