... of likelihood that the maturity level of a particular company matches one of the five levels developed by Software Engineering Institute (SEI) in 1991. The main reason for creating the model was the aspiration to improve the quality of software products being developed at that time. In the meantime, a whole family of models has been developed and released for use, including SW-CMM for software products, SE-CMM for system engineering, Acquisition CMM for purchasing, People CMM for human resource management, and ICMM for products integration. Because the models have been developed by different groups of experts and for the most part on account of indiscretion in standards, a variety of these models have gradually become very difficult to understand and implement. In 2002, SEI has therefore made available a new model called CMMI, which had all of the existing models incorporated in it and was more consistent and compliant ...

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