Framework Comparison

CMMC VS ISO 27001 WHICH DO YOU NEED?

Both frameworks protect sensitive data, but they serve different purposes. CMMC is mandatory for DoD contractors. ISO 27001 is voluntary and internationally recognized. PTG helps you determine the right path.

CMMC Registered Practitioner Org|BBB A+ Since 2003|23+ Years Experience
Comparison

Side-by-Side Analysis

CMMC 2.0

  • Mandatory for DoD contractors handling CUI
  • Based on NIST 800-171 (110 controls)
  • C3PAO third-party assessment
  • Three maturity levels
  • US government focused

ISO 27001

  • Voluntary, internationally recognized standard
  • Risk-based ISMS with 93 Annex A controls
  • Accredited certification body audit
  • Single certification level
  • Global applicability
Overlap

Where CMMC and ISO 27001 Align

Both frameworks share significant control overlap. Organizations pursuing both can leverage shared implementations.

Access Control

Both require role-based access, least privilege, and authentication controls to limit data access.

Risk Assessment

Both mandate regular risk assessments to identify vulnerabilities and prioritize remediation.

Incident Response

Both require documented incident response procedures, reporting, and lessons learned processes.

Audit and Accountability

Both require audit logging, monitoring, and review to detect and investigate security events.

Decision Guide

Which Framework Do You Need?

DoD Contractors: CMMC Required Global Businesses: ISO 27001 Both DoD + International: Pursue Both SaaS Companies: ISO 27001 + SOC 2
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