CMMC Ready — CMMC Level 2
95% NIST 800-171 coverage. 2 control gaps identified.
CMMC Status
CMMC Ready
Target Level
Level 2
NIST Coverage
95%
AWS GovCloud
by Amazon Web Services
Overview
AWS GovCloud by Amazon Web Services is a cloud storage solution with FedRAMP authorization targeting CMMC Level 2 compliance. It provides 95% coverage of NIST 800-171 controls for defense contractors handling CUI.
What This Means for Defense Contractors
AWS GovCloud meets the architectural requirements for CMMC Level 2. However, CMMC compliance depends on your entire system boundary — not just individual tools. There are 2 NIST 800-171 control gaps that need remediation before assessment. Defense contractors using AWS GovCloud should verify that their System Security Plan (SSP) documents how this tool fits within their authorization boundary.
NIST 800-171 Coverage
Control Gaps
Using AWS GovCloud without addressing these NIST 800-171 controls may result in findings during a CMMC assessment:
Strengths
Using AWS GovCloud in a CMMC Environment
For defense contractors already using AWS GovCloud, the path to CMMC compliance involves documenting the tool in your System Security Plan (SSP), ensuring proper access controls are configured, and validating that AWS GovCloud's security controls align with your authorization boundary. With 95% NIST 800-171 coverage, AWS GovCloud provides a strong compliance foundation, though the 2 remaining control gaps will need compensating controls or supplementary tools.
CMMC-Ready Cloud Storage Alternatives
CMMC Compliance Analysis for AWS GovCloud
AWS GovCloud demonstrates strong CMMC Level 2 readiness as a FedRAMP High authorized cloud infrastructure serving defense contractors handling CUI. The platform excels in Access Control (AC) and System and Communications Protection (SC) control families through its Identity and Access Management (IAM) with role-based permissions, mandatory MFA enforcement, and AES-256 encryption for data at rest and in transit. Its dedicated government-only infrastructure physically and logically segregated from commercial AWS regions directly addresses CUI protection requirements. During C3PAO assessment, evaluators will verify GovCloud's inherited controls through FedRAMP authorization documentation, focusing on contractor-specific configurations rather than underlying infrastructure security. The platform can remain within CMMC authorization boundaries as it maintains continuous FedRAMP authorization and supports required audit logging through CloudTrail and Config services. However, gaps in controls 3.1.20 (privileged function execution) and 3.3.1 (audit record creation) require contractor-implemented compensating controls, as AWS provides infrastructure-level auditing but not application-specific audit record generation. Compared to competitors like Microsoft Azure Government and Google Cloud for Government, AWS GovCloud offers superior CMMC readiness through its mature FedRAMP High authorization, extensive third-party security attestations, and comprehensive NIST 800-171 control inheritance documentation. The platform's 95% NIST coverage significantly reduces contractor compliance burden compared to commercial cloud providers or on-premises solutions requiring full control implementation.
Configuration Guide
Configure AWS CloudTrail across all regions with S3 bucket encryption and cross-region replication to address audit logging requirements for control 3.3.1, establishing comprehensive API-level audit trails. Implement AWS Config rules for continuous compliance monitoring and automated remediation of configuration drift. Deploy AWS Systems Manager Session Manager to eliminate direct SSH/RDP access, supporting privileged access controls for 3.1.20. Configure IAM policies with least-privilege principles, implementing condition-based access controls and regular access reviews through Access Analyzer. Enable AWS Security Hub with NIST 800-171 compliance standard for continuous control assessment. Document compensating controls in SSP sections AC-3 and AU-2, specifically detailing how CloudWatch Logs and third-party SIEM integration provide required audit record creation capabilities. Timeline estimate: 6-8 weeks for initial configuration, 2-4 weeks for SSP documentation updates. Establish continuous monitoring through AWS Config compliance dashboards and monthly access reviews. Maintain GuardDuty and Security Hub findings remediation within 30 days for high-severity issues. Prepare C3PAO evidence including FedRAMP inheritance documentation, CloudTrail logs demonstrating audit coverage, IAM policy documentation showing least-privilege implementation, and encryption key management procedures through AWS Key Management Service. Schedule quarterly compliance reviews to validate control effectiveness and update POA&M entries for any identified gaps.
Configuration Checklist
- 1ISSO configures AWS CloudTrail with encryption and cross-region replication for comprehensive audit logging addressing NIST 3.3.1
- 2Sysadmin enables AWS Config rules for NIST 800-171 compliance monitoring and automated remediation across all regions
- 3ISSO implements IAM least-privilege policies with condition-based access controls supporting NIST 3.1.1 and 3.1.2
- 4Sysadmin deploys Systems Manager Session Manager eliminating direct privileged access for NIST 3.1.20 compliance
- 5ISSO configures AWS Security Hub with NIST 800-171 standard for continuous control assessment and gap identification
- 6ISSO documents compensating controls in SSP sections AC-3 and AU-2 for identified gaps 3.1.20 and 3.3.1
- 7C3PAO prepares FedRAMP inheritance documentation mapping AWS GovCloud controls to contractor SSP requirements
- 8Sysadmin establishes CloudWatch Logs integration with organizational SIEM for centralized audit record management
- 9ISSO conducts quarterly access reviews using IAM Access Analyzer recommendations for continuous compliance maintenance
- 10ISSO maintains POA&M entries for gap remediation with defined timelines and responsible parties for C3PAO review
Related Compliance Assessments
Frequently Asked Questions
Is AWS GovCloud CMMC compliant?
AWS GovCloud meets CMMC Level 2 requirements with 95% NIST 800-171 control coverage.
What NIST 800-171 controls does AWS GovCloud cover?
AWS GovCloud covers 95% of the 110 NIST 800-171 controls, with 2 gaps primarily in 3.1.20 and 3.3.1 control families.
What are the CMMC compliance gaps for AWS GovCloud?
The primary gaps are in controls 3.1.20, 3.3.1. These require supplementary tools or process controls to achieve full CMMC Level 2 compliance.
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