The Shared Responsibility Matrix (SRM) is a critical tool for delineating responsibilities in multi-entity environments. The SRM helps ensure that all CMMC security requirements are addressed and that there are no gaps in responsibility. It ensures that each entity understands its role in achieving and maintaining CMMC compliance. By outlining responsibilities, the SRM facilitates effective collaboration among all parties involved. It provides clarity on roles and responsibilities, ensures comprehensive coverage of CMMC controls, and is essential for effective collaboration, risk management, and incident response in multi-party environments.