The Capability Maturity Model for Software describes the principles and practices underlying software process maturity and is intended to help software organizations improve the maturity of their software processes in terms of an evolutionary path from ad hoc, chaotic processes to mature, disciplined software processes. The CMM is organized into five maturity levels:
1) Initial. The software process is characterized as ad hoc, and occasionally even chaotic. Few processes are defined, and
success depends on individual effort and heroics.
2) Repeatable. Basic project management processes are established to track cost, schedule, and functionality. The
necessary process discipline is in place to repeat earlier successes on projects with similar applications.
3) Defined. The software process for both management and engineering activities is documented, standardized, and integrated into a standard software process for the organization. All projects use an approved, tailored version of the organization's standard software process for developing and maintaining software.
4) Managed. Detailed measures of the software process and product quality are collected. Both the software process and products are quantitatively understood and controlled.
5) Optimizing. Continuous process improvement is enabled by quantitative feedback from the process and from piloting innovative ideas and technologies.
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