This document provides an overview of the Capability Maturity Model Integration (CMMI) version 1.3 for improving processes in developing products and services. It discusses the key components of CMMI including process areas, relationships among process areas, and using the CMMI model for adoption. The document also provides information on CMMI for Development, Services, and Acquisition and how the CMMI framework addresses product and service development, service management, and product/service acquisition.