Capability Maturity Model Integration (CMMI)

Capability maturity model integration is a framework that describes the key elements of an effective software process.

Level 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.
Level 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.
Level 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 organizations standard software process for developing and maintaining software.
Level 4: Managed
Detailed measures of the software process and product quality are collected. Both the software process and products are quantitatively understood and controlled.
Level 5: Optimized
Continuous process improvement is enabled by quantitative feedback from the process and from piloting innovative ideas and technologies.