CMMI (Capability Maturity Model Integration) is a framework for improving an organization's processes by implementing best practices. It includes process areas like project management, configuration management, and requirements management. CMMI models can be used to assess an organization's processes and identify areas for improvement. Organizations can progress through maturity levels from initial/ad hoc processes to optimized, quantitatively managed processes as they improve their capabilities in each process area. CMMI provides a structured way for organizations to improve their processes to better manage projects, costs, schedules, and quality.