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Evolution of CMMI

The CMM Integration project was formed to sort out the problem of using multiple CMMs. The combination of selected models into a single improvement framework was intended for use by organizations in their pursuit of enterprise-wide process improvement.

Developing a set of integrated models involved more than simply combining existing model materials. Using processes that promote consensus, the CMMI Product Team built a framework that accommodates multiple constellations.

The first model to be developed was the CMMI for Development model (then simply called "CMMI"). Figure 1.2 illustrates the models that led to CMMI Version 1.3.

Figure 1.2

Figure 1.2 The History of CMMs6

Initially, CMMI was one model that combined three source models: the Capability Maturity Model for Software (SW-CMM) v2.0 draft C, the Systems Engineering Capability Model (SECM) [EIA 2002a], and the Integrated Product Development Capability Maturity Model (IPD-CMM) v0.98.

These three source models were selected because of their successful adoption or promising approach to improving processes in an organization.

The first CMMI model (V1.02) was designed for use by development organizations in their pursuit of enterprise-wide process improvement. It was released in 2000. Two years later Version 1.1 was released and four years after that, Version 1.2 was released.

By the time that Version 1.2 was released, two other CMMI models were being planned. Because of this planned expansion, the name of the first CMMI model had to change to become CMMI for Development and the concept of constellations was created.

The CMMI for Acquisition model was released in 2007. Since it built on the CMMI for Development Version 1.2 model, it also was named Version 1.2. Two years later the CMMI for Services model was released. It built on the other two models and also was named Version 1.2.

In 2008 plans were drawn to begin developing Version 1.3, which would ensure consistency among all three models and improve high maturity material in all of the models. Version 1.3 of CMMI for Acquisition [Gallagher 2011, SEI 2010b], CMMI for Development [Chrissis 2011, SEI 2010c], and CMMI for Services [Forrester 2011, SEI 2010a] were released in November 2010.

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