The CMMI Steering Group initially approved a small introductory collection of acquisition best practices called the Acquisition Module (CMMI-AM), which was based on the CMMI Framework. While it described best practices, it was not intended to become an appraisable model nor a model suitable for process improvement purposes. A similar, but more up-to-date document, CMMI for Acquisition Primer, is now available [Richter 2008].

General Motors partnered with the SEI to create the initial Acquisition model draft that was the basis for this model. The model now represents the work of many organizations and individuals from industry, government, and the SEI.

When using this model, use professional judgment and common sense to interpret it for your organization. That is, although the process areas described in this model depict behaviors considered best practices for most acquirers, all process areas and practices should be interpreted using an in-depth knowledge of CMMI-ACQ, your organizational constraints, and your business environment [SEI 2007b].

This document is a reference model that covers the acquisition of needed capabilities. Capabilities are acquired in many industries, including aerospace, banking, computer hardware, software, defense, automobile manufacturing, and telecommunications. All of these industries can use CMMI-ACQ.