Capability Maturity Model

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Capability Maturity Model

• Brian Gornall
• October 7, 2004

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Defined

• The Capability Maturity Model (CMM) is a model of
  standards and guidelines to improve the quality
  of software production.

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Overview

• Is there a need?
• The five levels of maturity.
• An example of a company implementing CMM.
• Results and benefits
• Exercise
• Summary
• Readings

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Is there a need for the Capability Maturity Model?

• What is the estimated economic loss to the United
  States due to faulty and buggy software in 2004?
• 300 Million
• 59 Billion
• 13 Billion
• 800 Million

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Is there need cont.

• Of the 59 Billion loss, how much could be
  recovered due to improvements in testing and
  early detection of defects?
• 50 Billion
• 12 Billion
• 22 Billion
• 5 Billion

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The Five Levels of Maturity

• Initial
• Repeatable
• Defined
• Managed
• Optimizing
• CMM outline from Carnegie Melon University

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Level 1 Initial

• Current State
• Chaotic
• Challenges
• Project planning
• Quality Assurance

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Level 2 Repeatable

• Current State
• Development process is dependent on individuals
• Challenges
• Training
• Process focus

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Level 3 Defined

• Current State
• Formal processes are defined and
  institutionalized
• Challenges
• Process measurement
• Quantitative quality measurements

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Level 4 Managed

• Current State
• Processes are quantitatively measured
• Challenges
• Changing technology
• Problem prevention

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Level 5 Optimizing

• Current State
• Continuous process improvement
• Challenges
• Maintaining optimized level

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Example of a company assimilating the CMM way

• Company of study
• Hewlett-Packard
• Began with
• Assessing which level they were currently at.

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Example cont.

• Plan of attack
• Planning stage for reaching levels of maturity.
• Implementing standard processes.
• Audit their status.

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Example cont.

• Plan of attack cont.
• Measuring Progress
• Managing Change

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Example cont.

• Results from HP implementing CMM.

Date Average Cycle Time Average Schedule Estimated Error
1990-91 19.67 4
1991-92 16 4.5
1994 22 1
1995 9.8 0

Time listed in months Time listed in months
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Results and Benefits from other companies

• Companies that moved to level 3 from a previous
  level saw the following
• 5 to 1 return on investment at Hughes Aircraft
• 75 decrease in rework costs, 21 decrease in
  project costs, 190 increase in productivity at
  Raytheon Corp.

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Exercise
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Summary

• The Capability Maturity Model
• Initial
• Repeatable
• Defined
• Managed
• Optimizing

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Summary cont.

• The Capability Maturity Model has valid results
  from companies that implemented the model, and
  shall have a need so long as there is software
  developed by humans.

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Readings

• Fox, Christopher and Frakes, The quality
  approach Is it delivering?, Communications of
  the ACM, Vol. 40, No. 6 June 1997.
• Lowe, Douglas E. Cox, Guy Implementing the
  Capability of Maturity Model for software
  development. Hewlett-Packard Journal, Aug96,
  Vol. 47 Issue 4.
• Paulk, M. et al., Capability Maturity Model for
  Software, Software Engineering Institute,
  Carnegie-Mellon University, PA, 1993.

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Readings cont.

• Phan, Dien D., Software quality management
  strategies The IBM lesson, Information Systems
  Management, Spring 1998, p. 40-45.
• Phan, Dien D., Software quality management How
  the Worlds most powerful software makers do it,
  Information Systems Management, Winter 2001, Vol.
  18 Issue 1, p. 56-68.