CMM Capability Maturity Model


  • Capability Maturity Model.
  • Developed by W. humphrey at Carnegie Mellon University.
  • CMM does not recommended particular set of mature processes to be followed by the organization.
  • Can be used to assess the maturity of existing process.

Following is the illustration of CMM:
CMM maturity levels are:

  • Initial
  • Repeatable
  • Defined
  • Managed
  • Optimized

Based on the maturity assessment result organization may placed at one of the above maturity levels. The best of all five is Optimized level.


  • Ad hoc, informal, non documented processes are used.
  • Project success depends on efforts of some of the team members.
  • Due to lack of documented development methodologies similar type of new project may or may not give success.
  • Completed projects characterized as low quality, numerous errors, running over time , over budget.


  • Development methodology and all its phases are partially documented.
  • Processes involved are repeatable.
  • Rigorous application of documented phase varies from project to project.
  • Project management techniques and tools are used to track process in terms of:
    • Cost
    • Schedule
    • Project outputs


  • Processes are document and well defined which used here.
  • Internal standards and documented methodology are used.
  • Documented processes updated over time using past experiences.


  • Developmental metrics are collected during project execution processes for software quality management.
  • These metrics allow the project manager to predict the future performance of the remaining phases.
  • Metrics allow the manager to manage risk more effectively.


  • Processes are continuously improved based on the quantitative understanding of the common causes of variation inherent in processes.

1. Which is not software life cycle model?
a) Waterfall model
b) RAD Model
c) Capability Maturity Model
d) Spiral Model
View Answer
Capability Maturity Model

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