There are four models:
- CMMI for Development - engineerign products
- CMMI for acquisition - for acquiring/buying products
- CMMI for services - providing services
- People CMM - developing the workforce
There are 5 levels, with level 5 being the highest (best ie highest maturity).
- Initial - unpredicatable and reactive
- Managed - Managed at project level
- Defined - Proactive
- Quantitatively managed - Measured and controlled
- Optimizing - Stable and flexible
For more information visit: http://cmmiinstitute.com/