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A CUI enclave is a deliberately scoped environment (often a dedicated cloud tenant or GCC High environment) where all CUI is stored, processed, and transmitted. Everything outside the enclave stays out of assessment scope.

Enclaves are the dominant cost-control strategy: rather than bringing an entire corporate network up to 110 controls, an organization secures a much smaller boundary. Enclave seats commonly run $150–$300 per user per month.

Over-scoping — failing to segment CUI into an enclave — is the most common reason small organizations overspend on CMMC.

Related records

Guides and articles describe the work. The evidence that work produces is described in three proof pages, the architecture page, and the two pages on authorization.

proof.state
Proof of State. What the environment was, as of a date someone else picks: point-in-time records, content hashed and chained.
proof.change
Proof of Change. Who or what altered the environment, under what authority, with before and after state hashes.
proof.agency
Proof of Agency. What a machine was permitted to do before it acted, what it did, and what would have stopped it.
architecture
Architecture. How the chain is built and where the evidence is stored in each delivery mode.
authorization
Continuous ATO. How an authorizing official's decision is recorded with its package, and how the authorized system is checked against it every hour.
baseline
NIST SP 800-53. The Low, Moderate and High baselines as evidence, with the SSP, SAR and POA&M generated from one record.

Related terms and reading

  1. CUI: Controlled Unclassified InformationCUI is government-created or -owned information that requires safeguarding under law, regulation, or government-wide policy, but is not classified.
  2. NIST SP 800-171NIST SP 800-171 is the federal standard of 110 security controls for protecting CUI in non-federal systems: the technical basis of CMMC Level 2.
  3. DFARS 252.204-7012DFARS 7012 is the long-standing clause requiring organizations to safeguard covered defense information per NIST 800-171 and report cyber incidents within 72 hours.
  4. CMMC Cost Calculator

Know the term. Then see the record behind it.

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