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CMMI for Outsourcing: Guidelines for Software, Systems, and IT Acquisition by Susan Kushner, John W. Mishler, Deborah K. Yedlin, Hubert F. Hofmann

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Chapter 1. Introduction to the CMMI-ACQ

A model is a representation of a complex entity or process. It can describe the details of a larger object, or it can be a schematic description of a system. A model can capture phenomena so that they can be analyzed and studied.

The value of a model is in its abstractions, and through these abstractions it simplifies what may be a complex reality. It is important, then, to be able to take a model, along with all its associated abstractions, and compare it to reality. In this way, you can use the model pragmatically to study phenomena and validate hypotheses. In the case of capability maturity models, you can compare your organization’s acquisition processes to the standard model and determine how your practices ...

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