The scope of your CUI boundary determines the cost of CMMC compliance. We architect an isolated CUI enclave in Terraform — network-segmented, access-controlled, and documented for your System Security Plan.
Every system inside your CMMC assessment boundary must have all applicable NIST 800-171 controls verified by a C3PAO assessor. A boundary that includes your entire IT environment — because CUI files were found on shared drives or email — creates a remediation program an order of magnitude larger than necessary.
A well-designed CUI enclave isolates the minimum set of systems that genuinely need to process CUI, creates a defensible network boundary between CUI and non-CUI environments, and keeps everything outside the enclave out of scope. The result is fewer controls to verify, lower assessment cost, and a sharper SSP.
VIS LLC designs the enclave architecture first, then implements it in Terraform. The same code that builds the enclave also enforces the controls. Scope and compliance are solved together.
Trace every path CUI enters, moves through, and exits your organization to define the minimum necessary boundary.
Virtual network separation, firewall rules, and routing controls that isolate CUI systems from corporate IT.
Least-privilege role assignments, MFA enforcement, and privileged access controls scoped to the enclave boundary.
Log collection, audit event configuration, and alerting deployed within the CUI boundary for NIST AU family compliance.
Complete IaC for the enclave architecture, version-controlled in your repository, deployable and reproducible.
Designed for Azure Government, Azure Commercial, and AWS GovCloud. IaC delivered as Terraform — deployable, auditable, repeatable.
The most common CUI enclave platform for DoD contractors. Azure Government is FedRAMP High authorized, and many NIST 800-171 controls are satisfied through the shared responsibility model. VIS LLC architects Azure Government enclaves using Landing Zones, Azure Policy, and Entra ID Conditional Access.
AWS GovCloud supports CUI workloads with FedRAMP High authorized services. VIS LLC designs CUI enclaves using AWS Organizations, Service Control Policies, VPC segmentation, and AWS Config rules implemented as Terraform. Supports both contractor self-managed and MSP-managed deployments.
Some contractors require on-premises CUI enclaves due to contract requirements, data residency, or existing infrastructure investment. VIS LLC designs hybrid enclaves that maintain a VLAN-segmented on-prem boundary while using cloud services for backup, monitoring, and identity — with Terraform managing both layers.
What contractors ask when approaching CUI boundary architecture for the first time.
CUI enclave design is the first step. Full readiness covers all 110 controls and C3PAO assessment preparation.
After the enclave is defined, a gap analysis evaluates all 110 controls against your newly scoped boundary.
Implement all remaining NIST 800-171 controls within the CUI enclave using IaC after scope is defined.
A 30-minute call is enough to understand your current CUI footprint and what a properly scoped enclave would look like for your organization.
Schedule a Free CUI Architecture ConversationVirtual Infrastructure Services LLC · South Brunswick, NJ · +1 (732) 200-7352