CMMCDocs.comCUI Enclave
Also known as: CUI environment
A logically or physically isolated environment within the contractor's broader IT footprint that contains all CUI processing and storage. A common scoping strategy.
A CUI enclave is a logically or physically isolated environment within the contractor's broader IT footprint that contains all Controlled Unclassified Information processing, storage, and transmission. The rest of the corporate environment is declared out-of-scope.
The CUI enclave strategy is the most common scoping approach for small and mid-size defense contractors because it dramatically reduces the assessment burden: instead of bringing the entire IT environment into compliance, only the enclave needs to meet the 110 NIST SP 800-171 requirements.
Common enclave implementations include a separate Microsoft 365 GCC High tenant, a dedicated network segment, an on-premises secure room with isolated workstations, or a dedicated cloud environment in AWS GovCloud or Azure Government.
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