Abstract

AbstractAt first glance, the Capability Maturity Model Integration (CMMI) appears to be clearly divided into two advanced levels of maturity, Level 4 dealing with quantitatively managing products and processes using statistical methods, and Level 5 dealing with comprehensive corrective and preventive actions. However, underlying the four process areas, two of which belong to each level, is a closed‐loop system that encompasses both levels that if left unrecognized and unused makes reaching and sustaining Level 5 very difficult. This paper reveals and describes this closed‐loop system with its intricate feedback loops to the degree necessary for all who aspire to Level 5 to benefit. The paper is based on the actual experience of one of the larger Boeing sites and is written by two of the team that developed this system and then used it to reach CMMI Maturity Level 5 in September of 2005. Those implementing CMMI at advanced levels of maturity must be able to recognize and make good use of this embedded system and the high degree of integration that exists across the model at all levels.

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