The Requirements Process Maturity Model (RPMM) is a framework designed to help organizations define the maturity of their requirements processes. The RPMM was developed by the Requirements Engineering Institute (REI) and represents a new way of thinking about requirements and how they should be defined. The model provides an understanding of how different types of requirements are created, managed, and used. It also helps organizations to identify when their processes are ready for adoption by others in their organization.