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Microsoft 365 Business Premium for GCC High: Pros and Cons for CMMC

Written by Editorial Team | Feb 12, 2026 9:45:32 PM

For small to mid-sized federal contractors, the path to CMMC compliance often feels like being stuck between a rock and a hard place. On one side, you have the Department of War (DoW) requiring stringent security controls to secure future contracts. On the other, you have the eye-watering costs of the technology required to meet those controls — specifically, Microsoft GCC High G5 licenses.

For a long time, the G5 license was the gold standard, but its price tag was prohibitive for smaller organizations. Enter Microsoft 365 Business Premium for GCC High.

Designed specifically for smaller organizations in the DIB, this SKU promises a secure, compliant environment at a lower price point than Microsoft GCC High. But before you rush to migrate, there is a reality check you need to hear. While the license itself is cheaper, the total cost of ownership is a different story.

Here is what federal contractors need to know about what to expect from MS Business Premium for GCC High.

The Good News: Significant Savings

Let’s start with the positives. Microsoft listened to the market and recognized that small businesses (SMBs) play a vital role in the Defense Industrial Base (DIB). They introduced the Business Premium SKU for GCC High to help these smaller players compete.

  • The Price Tag: This license is roughly 25% cheaper than the enterprise-level G5 licenses, even after you factor in the necessary add-ons required to meet CMMC Level 2 standards.
  • Who It's For: It is designed explicitly for smaller organizations (capped at 300 seats) that need the security of the Government Cloud without the enterprise bloat.

On paper, this looks like the perfect solution for a contractor trying to protect their margins while protecting Controlled Unclassified Information (CUI).

The Reality Check: Access ≠ Compliance

This is where many contractors get caught off guard. Purchasing the license provides you with a compliant environment (one that meets data sovereignty requirements for DFARS 252.204-7012). It does not make you CMMC Level 2 compliant out of the box.

Think of it like buying a high-tech security system for your office building. Microsoft sells you the cameras, the sensors, and the control panel. However, when you first turn it on, the cameras aren't recording, the sensors aren't calibrated, and the alarms aren't set.

Nothing comes "set up."

When you purchase M365 Business Premium for GCC High, you are buying access to a system, not a configured solution. You are left with the heavy lifting of configuring complex tools like Microsoft Intune endpoint management, Entra ID identity management (formerly Azure AD), and Purview. And there’s a lot of DIY setup that could potentially go awry, especially when it comes to handling the DoW’s highly sensitive data. The stakes are high. 

The Complexity of GCC High

If you have an IT director who is a wizard with Microsoft Commercial Cloud, you might be tempted to think, “We can handle this in-house.”

Proceed with caution.

GCC High is a completely different animal than the Commercial Cloud. The interface, the logic, and the feature parity are different. Feedback from customers and consultants in the field suggests that unless you are a verified expert in both MS GCC High and CMMC controls, you will likely misconfigure the environment.

Based on our conversations with customers and Microsoft resellers in the DIB, there are no "step-by-step" guides from Microsoft on how to configure this specific SKU for CMMC. There are only high-level guides on what features exist. You are left to figure out how to map those features to the 110 practices of CMMC Level 2.

The Hidden Costs: Configuration and Documentation

Because the environment is so complex, the standard recommendation is to hire a third-party consultant (MSP or MSSP) to handle the deployment.

  • Setup Fees: Market rates for a proper GCC High setup and implementation range anywhere from $10,000 to over $50,000, depending on the complexity of your organization.
  • The DIY Risk: We have heard horror stories from organizations turning it on themselves, realizing halfway through that they are in over their heads, and having to pay a consultant more to "fix" the mess before building it correctly.

Furthermore, configuration is only half the battle. CMMC requires rigorous documentation. You must document exactly how you configured the system in your System Security Plan (SSP), policies, and procedures. If you configure it yourself, you must write the technical documentation yourself.

A cheaper version of GCC High for CMMC sounds fantastic in a headline. But once you dig into the technical requirements to actually make it work for an enterprise, you realize it is significantly harder, requires complex key management, and costs much more in labor than anticipated.

The license cost is just the tip of the iceberg.

Know Your Options for CMMC Compliance in Microsoft 365

Microsoft 365 Business Premium for GCC High is a welcome addition to the market and a viable path for small contractors. However, it is not a "plug-and-play" compliance sticker.

Our advice?

  1. Budget for implementation: If the MS365 Business Premium for GCC High package seems like the best move for your organization, take the 25% savings on licensing and reallocate it toward a qualified consultant who knows the intersection of GCC High and CMMC.
  2. Think outside the checkbox: While you need a FedRAMP environment for storing CUI, you have other options outside of Microsoft's GCC packages. Smaller organizations may opt to tightly scope CUI data and handle it outside of the Microsoft Commercial Cloud environment with a solution like Virtru.  

Virtru provides data-centric security that allows you to encrypt and share CUI easily with external partners and customers, without requiring users or recipients to become encryption experts. In fact, many of our customers who use Microsoft GCC High still choose Virtru for easy, secure file sharing outside of their organizations.

Virtru customers like Maya HTT show that you can pass CMMC Level 2 assessments with Microsoft Commercial Cloud by managing CUI outside of the Microsoft environment, leveraging Virtru's FedRAMP authorized platform for external sharing. 

By layering Virtru on top of your Microsoft collaboration suite, you create a path for CUI files to be shared while remaining protected, regardless of how complex your network configuration becomes. Virtru brings security and collaboration together so that you don’t have to sacrifice one at the cost of the other — you can have both. 

Preparing for CMMC? Contact Virtru today to see how we can help secure your CUI and simplify your path to CMMC Level 2 compliance.