With CMMI (Capability Maturity Model Integration), top software quality experts have gone far beyond the successful CMM, codifying every aspect of model-based process improvement in one integrated framework. This concise, authoritative guide has three goals: to help understand the benefits of an integrated approach to process improvement; to introduce the CMMI project's new tools for multi-discipline process improvement; and to provide practical guidance in selecting and using these tools. The authors begin by identifying key shortcomings of traditional process improvement in 21st century environments that involve more people and organizations, must be delivered more quickly, and utilize the latest innovations. Next, they introduce the new CMMI standard, showing how it overcomes these limitations, adding substantial quality and value in development, systems engineering, acquisition, and other key areas. Finally, the authors walk through the process of implementing and using CMMI, presenting lessons learned by pioneers in integrated process improvement.