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Consultant, MSP, MSSP, RPO, or C3PAO — who should you hire first?

Answer 7 questions. We'll show you which partner type to engage first, and which to bring in second. No lead capture required to see your routing.

The Defense Compliance Report Editorial TeamIndependent CMMC and DIB compliance research
Published: Last reviewed:
Editorial research — not formally reviewed by a CMMC Subject Matter Advisor. Verify scope and applicability with a Registered Practitioner before acting.

The most expensive CMMC mistake small contractors make is hiring the wrong partner type first. A C3PAO is an assessor, not a preparer. An IT MSP is not a compliance consultant. A GRC platform is not a substitute for either. The routing below reflects how the roles actually divide.

Question 1 of 7
What kind of DoD data does your business handle?
FCI only points to Level 1. CUI points to Level 2. Some Level 3 programs add NIST SP 800-172 controls.
Question 2 of 7
Do you have a current System Security Plan (SSP) and POA&M?
Question 3 of 7
Have you posted a NIST SP 800-171 self-assessment score in SPRS?
Question 4 of 7
Who runs IT and security today?
Question 5 of 7
Are you planning a CUI enclave or a full-tenant scope?
Most small contractors use an enclave to shrink the assessment boundary.
Question 6 of 7
When do you need CMMC status posted?
Question 7 of 7
What is your total CMMC budget posture?
Rough buckets. The cost calculator gives a precise range.

Answer all 7 questions to see your routing.

The five partner types, in plain English

Readiness consultant / RPO. A CMMC Registered Practitioner (RP) or Registered Practitioner Organization (RPO) prepares your organization for assessment: scoping, SSP, policy suite, control implementation guidance, and evidence packaging. This is who you hire first if you are not yet assessment-ready.

Defense-focused MSP. The Managed Services Provider that stands up and runs the enclave or GCC High tenant where CUI lives — identity, endpoint, backups, MFA, MDM. A generic IT MSP without defense experience is not the same thing.

MSSP (managed security). Runs the security operations layer: SIEM, log retention, vulnerability management, incident response. Required for the 800-171 controls that demand continuous monitoring.

Authorized C3PAO. The only entity that can perform a Level 2 certification assessment. The Cyber AB authorizes C3PAOs. Engaging one before readiness is real wastes the assessment fee.

GRC / compliance platform. Software for SSP authoring, evidence collection, and continuous monitoring. Reduces manual burden but does not replace human readiness work.

Cyber AB — CMMC Ecosystem Roles (RP, RPO, CCP, CCA, C3PAO)

Definitions of the roles in the CMMC Ecosystem and the separation between readiness providers and authorized third-party assessors. Used to keep preparer/assessor independence.

View at Cyber AB

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Once you know which partner type to engage first, we'll route you to up to three vetted providers in that category. Free for buyers; providers pay us only when we deliver a qualified lead. See our editorial & advertising policy for how we keep readiness help separate from assessment.

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