Although these models have proven useful to many organizations in different industries, the use of multiple models has been problematic. Many organizations would like their improvement efforts to span different groups in their organizations. However, the differences among the discipline-specific models used by each group, including their architecture, content, and approach, have limited these organizations’ capabilities to broaden their improvements successfully. Further, applying multiple models that are not integrated within and across an organization is costly in terms of training, appraisals, and improvement activities.
The CMM IntegrationSM project was formed to sort out the problem of using multiple CMMs. Using information from these popular and well-regarded models as source material, the CMMI Product Team created a cohesive set of integrated models that can be adopted by those currently using the source models, as well as by those new to the CMM concept. Hence, CMMI is a result of the evolution of the SW-CMM, the SECM, and the IPD-CMM.
Recently, the CMMI model architecture was improved to support multiple constellations and the sharing of best practices among constellations and their member models. Work has begun on two new constellations: one for services (CMMI for Services) and the other for acquisition (CMMI for Acquisition). Although CMMI for Development incorporates the development of services, including the combination of components, consumables, and people intended to meet service requirements, it differs from the planned CMMI for Services (CMMI-SVC), which focuses on the delivery of services. The CMMI models that have been available in the community prior to 2006 are now considered part of the CMMI for Development constellation.
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