CMMC Guide · CMMC and CMMI
CMMC and CMMI: Security Compliance Meets Process Maturity
CMMC and CMMI sound alike but answer different questions. CMMC verifies that a defense contractor protects FCI and CUI to a required level. CMMI rates how mature and repeatable an organization’s processes are. They fit together well: mature processes make CMMC controls easier to run and to keep running between assessments.
How do CMMC and CMMI compare?
| CMMC | CMMI | |
|---|---|---|
| Question it answers | Is defense information protected? | How mature and repeatable are our processes? |
| Owned by | Department of War | ISACA (CMMI Institute) |
| Based on | FAR 52.204-21, NIST SP 800-171 and 800-172 | The CMMI model’s practice areas across domains such as Development, Services and Security |
| Result | A CMMC Status at Level 1, 2 or 3 | A maturity level rating (Level 2 to 5) |
| Assessed by | The company itself, a C3PAO or DCMA DIBCAC | A certified CMMI lead appraiser and appraisal team |
| Validity | Yearly (Level 1) or three years (Levels 2 and 3), plus yearly affirmations | Three years |
| Required by | DoW contracts that include the CMMC clause | Buyers and contract vehicles that ask for a rating |
How do CMMC and CMMI work together?
CMMC tells you what security requirements to meet. CMMI helps you build the habits that keep them met. A company that plans, measures and reviews its work as routine is far better placed to:
- keep controls working all year, not just before an assessment;
- sign its yearly CMMC affirmation with confidence;
- produce evidence quickly, because records are part of normal work.
The two communities are also connected: ISACA, which oversees CMMI, became the organization that certifies CMMC professionals and assessors in 2026. CMMI also includes a Security domain, a natural companion to CMMC for organizations that want both.
Questions about CMMC and CMMI
Does a CMMI rating satisfy CMMC?
No. CMMC requires its own assessment against FAR 52.204-21 or NIST SP 800-171 and 800-172. A CMMI rating shows process maturity, which helps you maintain CMMC, but it does not replace a CMMC assessment.
Should we pursue CMMC or CMMI first?
If your DoW contracts require CMMC, start there: it decides contract eligibility. Add CMMI when buyers ask for a maturity rating or when you want to make your processes, including security, more repeatable.
Talk to us about CMMC and CMMI
One conversation can cover both: what your contracts require and how to make it last.
Prefer the phone? Call +1 (202) 867-8444.
