Best CMMC compliance providers for small defense contractors

Provider B is a Registered Provider Organization (RPO) whose publicly described practice centers on NIST SP 800-171 Rev. 3 gap assessments, SSP authoring, and remediation program management leading to a Level 2 self-assessment posture.

The firm's published methodology references the DoD Assessment Methodology and the SPRS submission workflow, and explicitly distinguishes readiness work from C3PAO assessment.

Provider C operates a managed CMMC program targeting DIB companies that want to outsource the ongoing operational burden of NIST SP 800-171 Rev. 3 control coverage — logging, monitoring, endpoint management, vulnerability management, and incident response — rather than build the function in-house.

Published service descriptions reference Microsoft 365 GCC High and AWS GovCloud environments, suggesting practical familiarity with the cloud postures most commonly required at Level 2.

Provider G is a Registered Provider Organization whose practice description centers on gap assessments and SSP authoring against NIST SP 800-171 Rev. 3 for DIB companies new to formal compliance work. Engagement structure is fixed-fee in the published rate card.

The firm publicly stops at the readiness boundary and refers clients to authorized C3PAOs for assessment.

Provider B is a Registered Provider Organization (RPO) whose publicly described practice centers on NIST SP 800-171 Rev. 3 gap assessments, SSP authoring, and remediation program management leading to a Level 2 self-assessment posture.

The firm's published methodology references the DoD Assessment Methodology and the SPRS submission workflow, and explicitly distinguishes readiness work from C3PAO assessment.

Provider C operates a managed CMMC program targeting DIB companies that want to outsource the ongoing operational burden of NIST SP 800-171 Rev. 3 control coverage — logging, monitoring, endpoint management, vulnerability management, and incident response — rather than build the function in-house.

Published service descriptions reference Microsoft 365 GCC High and AWS GovCloud environments, suggesting practical familiarity with the cloud postures most commonly required at Level 2.

Provider G is a Registered Provider Organization whose practice description centers on gap assessments and SSP authoring against NIST SP 800-171 Rev. 3 for DIB companies new to formal compliance work. Engagement structure is fixed-fee in the published rate card.

The firm publicly stops at the readiness boundary and refers clients to authorized C3PAOs for assessment.

Provider B is a Registered Provider Organization (RPO) whose publicly described practice centers on NIST SP 800-171 Rev. 3 gap assessments, SSP authoring, and remediation program management leading to a Level 2 self-assessment posture.

The firm's published methodology references the DoD Assessment Methodology and the SPRS submission workflow, and explicitly distinguishes readiness work from C3PAO assessment.

Provider D is a compliance management platform that ships a NIST SP 800-171 Rev. 3 control framework, an SSP template, evidence collection workflows, and SPRS-score tracking. Published materials describe integrations with common identity, endpoint, and ticketing systems used by DIB IT teams.

The platform's role is documentation and evidence management — it does not perform readiness consulting or assessment. Most users pair it with an RPO or internal program lead.

Provider E positions itself toward teams with a fixed CMMC deadline and limited internal compliance staffing. The vendor advertises a starter pack mapped to NIST SP 800-171 Rev. 3 and the DoD Assessment Methodology, plus auditor-mode views designed to shorten evidence-walkthrough time.

Public materials emphasize speed-to-evidence, not consulting. Buyers should plan for a parallel readiness engagement when CUI scope is non-trivial.

Provider C operates a managed CMMC program targeting DIB companies that want to outsource the ongoing operational burden of NIST SP 800-171 Rev. 3 control coverage — logging, monitoring, endpoint management, vulnerability management, and incident response — rather than build the function in-house.

Published service descriptions reference Microsoft 365 GCC High and AWS GovCloud environments, suggesting practical familiarity with the cloud postures most commonly required at Level 2.

Provider F is a secure collaboration platform whose published architecture supports CUI sharing among DIB primes, subcontractors, and government counterparts. Documentation references end-to-end encryption and storage postures consistent with the cryptographic protections expected for CUI.

Adoption typically narrows CUI scope by isolating regulated data flows from general-purpose enterprise collaboration tools, reducing assessment burden in the rest of the environment.

Provider B is a Registered Provider Organization (RPO) whose publicly described practice centers on NIST SP 800-171 Rev. 3 gap assessments, SSP authoring, and remediation program management leading to a Level 2 self-assessment posture.

The firm's published methodology references the DoD Assessment Methodology and the SPRS submission workflow, and explicitly distinguishes readiness work from C3PAO assessment.

Provider D is a compliance management platform that ships a NIST SP 800-171 Rev. 3 control framework, an SSP template, evidence collection workflows, and SPRS-score tracking. Published materials describe integrations with common identity, endpoint, and ticketing systems used by DIB IT teams.

The platform's role is documentation and evidence management — it does not perform readiness consulting or assessment. Most users pair it with an RPO or internal program lead.

Provider E positions itself toward teams with a fixed CMMC deadline and limited internal compliance staffing. The vendor advertises a starter pack mapped to NIST SP 800-171 Rev. 3 and the DoD Assessment Methodology, plus auditor-mode views designed to shorten evidence-walkthrough time.

Public materials emphasize speed-to-evidence, not consulting. Buyers should plan for a parallel readiness engagement when CUI scope is non-trivial.

Provider A is an authorized C3PAO whose published assessment-process documentation aligns to the Cyber AB CMMC Assessment Process (CAP). Their public materials emphasize Level 2 C3PAO assessments scoped to small-to-mid DIB environments handling moderate CUI volumes.

Independence from readiness consulting is structural — the firm explicitly does not pair assessment with remediation in the same engagement, consistent with Cyber AB independence requirements.

Provider B is a Registered Provider Organization (RPO) whose publicly described practice centers on NIST SP 800-171 Rev. 3 gap assessments, SSP authoring, and remediation program management leading to a Level 2 self-assessment posture.

The firm's published methodology references the DoD Assessment Methodology and the SPRS submission workflow, and explicitly distinguishes readiness work from C3PAO assessment.

Provider G is a Registered Provider Organization whose practice description centers on gap assessments and SSP authoring against NIST SP 800-171 Rev. 3 for DIB companies new to formal compliance work. Engagement structure is fixed-fee in the published rate card.

The firm publicly stops at the readiness boundary and refers clients to authorized C3PAOs for assessment.