Management Maturity Level 4 – Quantitatively Managed OPP – Organizational Process Performance QWM – Quantitative Work Management Maturity Level 5 – Optimizing CAR – Causal Analysis and Resolution. OPM – Organizational Performance Management. Models (v1.3) CMMI best practices are published in documents called models, each of which addresses a different area of interest. Version 1.3 provides models for three areas of interest: development, acquisition, and services. CMMI for Development (CMMI-DEV), v1.3 was released in November 2010. It addresses product and service development processes. CMMI for Acquisition (CMMI-ACQ), v1.3 was released in November 2010. It addresses supply chain management, acquisition, and outsourcing processes in government and industry. CMMI for Services (CMMI-SVC), v1.3 was released in November 2010. It addresses guidance for delivering services within an organization and to external customers. Model (v2.0) In version 2.0 DEV, ACQ and SVC were merged into a single model where each process area potentially has a specific reference to one or more of these three aspects. Trying to keep up with the industry the model also has explicit reference to agile aspects in some process areas. Some key differences between v1.3 and v2.0 models are given below: "Process Areas" have been replaced with "Practice Areas (PA's)". The latter is arranged by levels, not "Specific Goals". Each PA is composed of a "core" [i.e. a generic and terminology-free description] and "context-specific" [ i.e. description from the perspective of Agile/ Scrum, development, services, etc.] section. Since all practices are now compulsory to comply, "Expected" section has been removed. "Generic Practices" have been put under a new area called "Governance and Implementation Infrastructure", while "Specific practices" have been omitted. Emphasis on ensuring implementation of PA's and that these are practised continuously until they become a "habit". All maturity levels focus on the keyword "performance". Two and five optional PA's from "Safety" and "Security" purview have been included. PCMM process areas have been merged. Appraisal An organization cannot be certified in CMMI; instead, an organization is appraised. Depending on the type of appraisal, the organization can be awarded a maturity level rating (1–5) or a capability level achievement profile. Many organizations find value in measuring their progress by conducting an appraisal. Appraisals are typically conducted for one or more of the following reasons: To determine how well the organization's processes compare to CMMI best practices, and to identify areas where improvement can be made To inform external customers and