The Role of a System Security Plan (SSP) in CMMC

A System Security Plan (SSP) is a formal document that provides an overview of the security requirements for an information system and describes the security controls in place or planned for meeting those requirements.

For CMMC, an SSP is essential because it:

• Documents how your organization implements NIST SP 800-171 controls (relevant for CMMC Level 2).
• Serves as a key piece of evidence during CMMC assessments.
• Helps identify gaps in your current security posture.

Your SSP should be a living document, updated as your systems and security practices evolve. Many templates are available, such as those from NIST CSRC.