Software Process Assessment and Improvement

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Software ProcessAssessment and Improvement
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Software Process

• Process is what binds people, methods and tools
• A process is defined by
• Process model (ie waterfall, spiral, etc.)
• Phases and timing between phases
• Entry and exit criteria for each phase
• Methods for performing the activities within each
  phase (i.e. object-oriented design, test-driven
  development, formal inspections, etc.)
• Roles and responsibilities of workers
• Workflows (requirements ? design ? code ? test)

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Process Issues

• There are good and bad processes
• Processes are more or less effective or mature
• Quality processes lead to quality products

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Software Process Assessmentand Improvement

• Software process assessment is used to
• Judge the capabilities of potential contractors
• Establish a current baseline from which to start
  an improvement initiative
• Software process improvement is important to stay
  competitive, lower costs, improve quality, etc.

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A Desirable Process is

• Defined
• Measured
• Controllable
• Effective
• Institutionalized

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Foundations of Software Process Improvement

• Software process improvement principles and
  techniques evolved from those used in
  manufacturing during the industrial revolution
• Based on the work of Shewhart, Deming, Crosby,
  Juran
• Watts Humphrey and Ron Radice applied these
  principles of process improvement in
  manufacturing to software development

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Different Process Improvement Frameworks

• Capability Maturity Model Integrated (CMMI)
• ISO 9001
• ISO/IEC 15504 (SPICE)

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CMMI

• Version 1.1 of the CMMI came out in 2002. Version
  1.2 came out in 2006. Version 1.3 came out in
  2010.
• CMMI integrates existing stand-alone or silo
  models (CMM, SW-CMM, SE-CMM, Integrated product
  development maturity model)

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CMMI Process Areas

• CMMI contains 22 process areas
• Project Planning
• Configuration Management
• Measurement and Analysis
• Etc
• The CMMI supports two different representations
  of these process areas
• Staged
• Continuous

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Staged vs. Continuous
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Staged
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CMMI DEV Staged Representation
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Model Components

• Process Areas (PA)
• Specific Goals (SG) Required
• Specific Practices (SP) Expected
• Typical Work Products Informative
• Sub-practices Informative
• Notes Informative
• Discipline Amplifications Informative
• References Informative
• Generic Goals (GG) Required
• Generic Practices (GP) Expected
• Generic Practice Elaborations Informative

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Example Process AreaProject Planning
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