Another very important difference between the "staged" versions of the CMMI and the CMM resides in the CMMI’s increased scope and larger set of discriminations. The CMMI consists of 25 process areas and 510628 practices (510 in the staged model and 628 in the continuous model), whereas the Software CMM consists of 18 key process areas and 316 practices . There are seven more process areas in the CMMI staged model than in the CMM model because the CMMI provides "more detailed coverage of the product life cycle" and because it incorporates several new application areas including software engineering, systems engineering, integrated product and process development, supplier sourcing, and acquisition .
CMMI staged model. Capability Maturity Model Integration (CMMI)
Level
Focus
Process Areas
5 Optimizing
Continuous Process Improvement
Organizational Innovation and Deployment
Causal Analysis and Resolution
4 Quantitatively Managed
Quantitative Management
Organizational Process Performance
Quantitative Project Management
3 Defined
Process Standardization
Requirements Development
Technical Solution
Product Integration
Verification
Validation
Organization Process Focus
Organization Process Definition
Organizational Training
Integrated Project Management for IPPD
Risk Management
Integrated Teaming
Integrated Supplier Management
Decision Analysis and Resolution
Organizational Environment for Integration
2 Managed
Basic Project Management
Requirements Management
Project Planning
Project Monitoring and Control
Supplier Agreement Management
Measurement and Analysis
Process and Product Quality Assurance
Configuration Management
1 Initial