The Capability Maturity Model Integration (CMMI) defines a Process Area as, "A cluster of related practices in an area that, when implemented collectively, satisfies a set of goals considered important for making improvement in that area." Both CMMI for Development v1.3 and CMMI for Acquisition v1.3 identify 22 process areas, whereas CMMI for Services v1.3 identifies 24 process areas. Many of the process areas are the same in these three models. Process Area Organization In CMMI models, the process areas are organized in alphabetical order according to their acronym. However, process areas can be grouped according to maturity levels or process area categories. Maturity Levels: CMMI for Development There are Five maturity levels. However, maturity level ratings are awarded for levels 2 through 5. The process areas below and their maturity levels are listed for the CMMI for Development model: Maturity Level 2 - Managed CM - Configuration Management MA - Measurement and Analysis PMC - Project Monitoring and Control PP - Project Planning PPQA - Process and Product Quality Assurance REQM - Requirements Management SAM - Supplier Agreement Management Maturity Level 3 - Defined DAR - Decision Analysis and Resolution IPM - Integrated Project Management OPD - Organizational Process Definition OPF - Organizational Process Focus OT - Organizational Training PI - Product Integration RD - Requirements Development RSKM - Risk Management TS - Technical Solution VAL - Validation VER - Verification Maturity Level 4 - Quantitatively Managed OPP - Organizational Process Performance QPM - Quantitative Project Management Maturity Level 5 - Optimizing CAR - Causal Analysis and Resolution OPM - Organizational Performance Management Maturity Levels: CMMI for Services The process areas below and their maturity levels are listed for the CMMI for Services model: Maturity Level 2 - Managed CM - Configuration Management MA - Measurement and Analysis PPQA - Process and Product Quality Assurance REQM - Requirements Management SAM - Supplier Agreement Management SD - Service Delivery WMC - Work Monitoring and Control WP - Work Planning Maturity Level 3 - Defined (this includes the process areas that make up the previous levels; Maturity Level 3 is made up of the process areas in Level 2 and Level 3) CAM - Capacity and Availability Management DAR - Decision Analysis and Resolution IRP - Incident Resolution and Prevention IWM - Integrated Work Management OPD - Organizational Process Definition OPF - Organizational Process Focus OT - Organizational Training RSKM -