The Capability Maturity Model
By Team #4
Overview
w History
w Description
w Five Individual Levels
w Statistics
w Positive Aspects
w Negative Aspects
History
w Dept. of Defense established SEI in response to a perceived
crisis in software development
w Developed by the Software Engineering Institute (SEI) at CMU
w Headed by Watts Humphrey, based on the earlier work of Phil
Crosby
w Introduced in 1991
What is the CMM !?!
w Purpose:
w A model for software
companies to follow in order to “mature” and improve their software development
processes.
w A system for rating a
software company’s process capabilities.
Structure of the CMM
The 5 Levels of Maturity
w Initial
w Repeatable
w Defined
w Managed
w Optimizing
Level 1 : Initial
w Few defined processes
w Ad hoc, chaotic
w Focus on individual
effort
Level 2 : Repeatable
w Basic project management practices
w Estimate size of
project & resources required
w Track progress
w Implement software
quality assurance
w Planning &
management of new projects
w Ability to manage
subcontractors
w In a crisis, tend to revert to Level 1
Level 3 : Defined
w Focus on the organization
w Have established software development and maintenance practices
w Also…
w Set of coding standards, with training
w Peer reviews evaluate quality
w Integrated project management
w In a crisis, level 3 practices are followed
Level 4 : Managed
w Primary focus : process quality
w Establish set of process measures
w Establishment of quantitative quality goals
w Quality and productivity are measured across all projects
w Improve existing processes
w Predictable. Software process operates within measurable limits.
Level 5 : Optimizing
w Ability to create new processes
w Help to introduce new technologies
w Implement defect analysis & prevention
w Goal : Strengthen the Process
Maturity Distribution
Trends in Maturity
Pros of CMM
w Aids in the selection
of contractors
w Guides organizations
towards improving the maturity of their software processes
w Has been shown to be
effective
Cons of CMM
w No theoretical basis
w a consensus among a
group of theorists
w Too much emphasis on the organization and less on individual effort
w Can be very constrictive
w Could prevent a
company from reaching its full competitive potential