FedRAMP
FedRAMP vs CMMC: Which Framework Applies and How They Interact
FedRAMP and CMMC are both federal security frameworks, both rooted in NIST standards, and both required for organizations working with the federal government — but they govern different actors, different data, and different compliance obligations. Conflating them or assuming that achieving one satisfies the other is a compliance error that creates real exposure. Armorstack’s VERITY advisory practice maps both frameworks for defense contractors and cloud service providers navigating the intersection of DoD supply chain requirements and federal cloud security standards.
Framework Comparison at a Glance
| Dimension | FedRAMP | CMMC 2.0 |
|---|---|---|
| Governing authority | GSA / FedRAMP PMO (OMB policy) | Department of Defense (32 CFR Part 170) |
| Who it applies to | Cloud service providers selling cloud services to federal civilian agencies | DoD contractors and subcontractors handling CUI or FCI |
| What it protects | Federal information processed by commercial cloud systems | Controlled Unclassified Information (CUI) and Federal Contract Information (FCI) in the defense industrial base |
| Underlying standard | NIST SP 800-53 (Low: ~125 controls; Moderate: ~325; High: ~421) | NIST SP 800-171 (Level 2: 110 practices); NIST SP 800-172 (Level 3) |
| Assessment model | Independent 3PAO assessment required; results submitted to agency and PMO | Level 1: self-assessment annual. Level 2: triennial C3PAO assessment (for contracts requiring it) or self-assessment. Level 3: DIBCAC-led government assessment. |
| Certification body | FedRAMP PMO (GSA) + Agency Authorizing Official | CMMC Third Party Assessment Organizations (C3PAOs) accredited by Cyber AB; DIB Cybersecurity Assessment Center (DIBCAC) for Level 3 |
| Result | Authority to Operate (ATO); listing in FedRAMP Marketplace | CMMC Level 1, 2, or 3 certification; required in DoD contracts via DFARS clauses |
| Continuous monitoring | Mandatory: monthly scans, annual pen test, incident reporting, change management | Level 2 self-assessed: annual affirmation. Level 2 C3PAO: triennial reassessment. Level 3: DIBCAC reassessment. |
| Timeline to compliance | 12-24 months for Agency Authorization | Level 1: ongoing; Level 2: 6-18 months for C3PAO assessment path |
The Core Distinction: Who Each Framework Governs
FedRAMP governs cloud service providers — the companies that build and operate cloud platforms, software-as-a-service applications, and cloud infrastructure that federal agencies procure and use. A company needs FedRAMP authorization if it is selling cloud services to federal civilian agencies and those services process or store federal information.
CMMC governs defense contractors — the companies that receive DoD contracts or subcontracts and, as part of that work, handle Federal Contract Information (FCI) or Controlled Unclassified Information (CUI). A defense contractor needs CMMC certification if its DoD contracts include the relevant DFARS clauses requiring it, which is increasingly the case across the defense industrial base. Learn more about CMMC compliance and how Armorstack prepares defense contractors for certification.
The critical implication: many organizations are subject to both frameworks simultaneously. A defense contractor that also provides cloud-based services to DoD agencies may need both CMMC Level 2 certification for its contract work and FedRAMP Moderate authorization for the cloud service it is selling. These are independent compliance obligations — achieving one does not satisfy the other, though there is meaningful control overlap.
Control Overlap and Where It Matters
Both FedRAMP and CMMC derive their control requirements from NIST standards, which means there is genuine overlap between what each framework requires. NIST SP 800-171 — the standard underlying CMMC Level 2 — was derived from NIST SP 800-53, which underlies FedRAMP. Many controls that satisfy CMMC Level 2 also satisfy corresponding FedRAMP Moderate controls, and vice versa.
The practical implication for organizations subject to both frameworks is that a unified control environment — one set of implemented controls mapped to both frameworks simultaneously — is significantly more efficient than treating each framework as a separate compliance project. A single MFA deployment satisfies both CMMC practices and corresponding FedRAMP controls. A single continuous monitoring program satisfies both frameworks’ monitoring requirements. A single vulnerability assessment program produces evidence for both.
However, the control sets are not identical, and the assessment processes are entirely separate. FedRAMP requires a 3PAO assessment and agency review. CMMC Level 2 (for contracts requiring a third-party assessment) requires a C3PAO assessment and Cyber AB oversight. An organization that has achieved FedRAMP Moderate authorization cannot present its ATO to a C3PAO in lieu of a CMMC assessment, and a CMMC Level 2 certificate does not substitute for FedRAMP authorization when selling cloud services to federal agencies.
Practical Decision Framework: Which Do You Need?
The determination of which framework applies — or whether both apply — follows directly from the nature of the business relationship with the federal government.
If your organization is a cloud service provider seeking to sell cloud-based products or services to federal civilian agencies, FedRAMP authorization is the requirement. CMMC does not apply unless you also hold DoD contracts that specifically require it.
If your organization is a DoD prime contractor or subcontractor and your contract work involves handling FCI or CUI, CMMC certification is the requirement. FedRAMP does not apply unless you are also providing cloud services to federal agencies.
If your organization does both — holds DoD contracts involving CUI and also provides cloud services to federal agencies — both frameworks apply. Armorstack’s VERITY advisory practice maps the dual obligation, identifies the overlapping controls that satisfy both frameworks simultaneously, and sequences the assessment processes to minimize duplication of effort and cost.
Review the FedRAMP authorization process for a detailed breakdown of the Agency path and ATO requirements. See FedRAMP 20x for how the new streamlined initiative changes the authorization timeline. Return to the FedRAMP compliance hub or explore all compliance frameworks Armorstack supports. Armorstack’s managed detection and response provides the continuous monitoring required under both frameworks.