Defender, Sentinel, Entra, Purview, and Intune ship with the capability an assessor expects to see. Whether they satisfy NIST 800-171 or CMMC depends on how they are deployed, and that is where most environments fail.
Zero Trust is the model the government now requires. Executive Order 14028 moved federal agencies toward it, and the Department of War’s Zero Trust strategy set a target architecture for the Defense Industrial Base to reach by 2027.
Microsoft built its security portfolio to implement three principles: verify explicitly, enforce least privilege, assume breach.
The Stack Microsoft Ships
Defender, Sentinel, Entra, Purview, and Intune come with the capability. Every organization that buys the license gets the same tools out of the box.
The Configuration You Own
Verify explicitly, enforce least privilege, assume breach. Those principles only become controls when someone configures them into the tenant. That part is yours.
Every product below is how those principles become enforced controls inside a tenant, or where they quietly do not.
Microsoft Entra
Formerly Azure Active Directory
Authentication, Conditional Access, MFA, Privileged Identity Management (just-in-time admin access), and identity governance. Defender for Identity adds detection for the on-premises Active Directory most contractors still run. Conditional Access decides who reaches CUI, from which device, under which conditions.
Microsoft Defender XDR
Formerly Microsoft 365 Defender
Correlates signal across endpoints, email, identity, and cloud apps so an analyst sees one incident instead of four alerts. Includes Defender for Endpoint, Office 365, Identity, and Cloud Apps (the CASB governing sanctioned and shadow SaaS).
Microsoft Sentinel
cloud-native SIEM · moving into the Defender portal
Microsoft is consolidating Sentinel and Defender XDR into one unified security operations console and retiring the standalone Azure portal experience. Logging is not optional in a defense contract. Sentinel is where the evidence sits when an assessor asks for it.
Microsoft Defender for Cloud
multicloud posture & workload protection
For workloads in Azure, AWS, and Google Cloud, it measures configuration against benchmarks and shows the drift: the gap between the environment you documented and the one that is running.
Microsoft Purview
data security, governance & compliance
Classification, sensitivity labeling, DLP, insider risk management, communication compliance, and eDiscovery. Sensitivity labeling and DLP keep controlled data inside the boundary and run well in GCC High. Insider Risk Management and Communication Compliance are not at full parity there yet, so confirm what is live before you rely on it.
Microsoft Intune
endpoint management
Every endpoint that touches CUI is in scope. Intune enforces device compliance, configuration baselines, and access limited to managed, healthy devices. It is where Configuration Management becomes something a device either passes or does not.
Microsoft Security Copilot
AI for security operations
AI for security operations
Generative AI in security operations, plus security-for-AI tooling that protects the AI apps organizations now deploy themselves. In the government clouds, AI availability moves fast and unevenly. Microsoft 365 Copilot reached GCC High in 2025. What is available in your tenant, and whether turning it on holds your compliance boundary, is a question to answer before the switch, not after.
Every engagement is scoped to the controls your contracts name. The order matters, because fixing licensing after you have configured on top of it means doing the work twice.
01
Assess the tenant against the contract
Map the current Entra, Defender, Purview, and Intune configuration to the NIST 800-171 controls the contract names. The output is a gap list, not a sales pitch.
02
Fix licensing and identity first
Right-size to E5 or the government SKU where a control requires it, then set Conditional Access, MFA, and Privileged Identity Management before anything else moves.
03
Configure the controls
Turn Defender XDR, Purview labeling and DLP, and Intune compliance from defaults into enforced policy, mapped to the requirement each one carries.
04
Build the evidence
Stand up Sentinel retention and correlation so Audit and Accountability produces the artifacts an assessor asks for, going back far enough to matter.
05
Make the documentation match
Write the System Security Plan to the environment that exists, then keep both current as the tenant changes. The paperwork and the configuration tell the same story.
Every control set before an assessor arrives is one you are not remediating under a deadline someone else set.
Tell us where you are and what you’re working toward.
We will respond within one buisness day.
The stack has the capability. CMMC is scored on how it is configured and evidenced, not on which products you own. A fully licensed tenant running default policies still fails. The controls have to be turned on, enforced, and documented.
It depends on the controls your contract names. Some requirements are only met by capabilities in E5 or a specific add-on, and some by the government SKU. The licensing follows the controls, not the other way around. We map it before you buy.
Feature availability, connector support, and release timelines. A control that works one way in commercial can be missing or configured differently in GCC High. Building compliant means knowing those deltas in advance, not finding them during an assessment.
The requirement is Audit and Accountability: retention, correlation, and evidence an assessor can read. Sentinel is how most Microsoft environments meet it. The obligation is the logging, and it is not optional in a defense contract.
Microsoft 365 Copilot reached GCC High in 2025, and AI availability in the government clouds is still moving. What is available in your tenant, and whether turning it on holds your compliance boundary, is a question to answer before you enable it.
Authorized infrastructure is the foundation, not the finish. Compliance depends on how the tenant on top of it is configured, logged, and documented. Authorized and compliant are two different questions.
Owning the tools isn’t the same as passing the audit. Let’s make sure both are true.
The configuration decides the outcome. A Microsoft security assessment shows you where your tenant stands against the controls your contracts name.
