XP Values, Practices and Principles

Here are the XP

Values:

• Communication (possibly Visibility)
• Simplicity
• Feedback (formerly Testing)
• Courage (formerly Aggressiveness) (See: XpCourageValue)
• Respect

Practices:

• Fine scale feedback
  • TestDrivenDevelopment via ProgrammerTests and CustomerTests (were UnitTests & AcceptanceTests)
  • PlanningGame
  • WholeTeam (was OnsiteCustomer)
  • PairProgramming
• Continuous process rather than batch
  • ContinuousIntegration
  • DesignImprovement (was RefactorMercilessly)
  • SmallReleases
• Shared understanding
  • SimpleDesign (DoSimpleThings, YouArentGonnaNeedIt, OnceAndOnlyOnce, SimplifyVigorously)
  • SystemMetaphor
  • CollectiveCodeOwnership
  • CodingStandard or CodingConventions
• Programmer welfare
  • SustainablePace (original name: FortyHourWeek)

Principles

Fundamental Principles:

• Rapid Feedback
• Assume Simplicity
• Incremental Change
• Embracing Change
• Quality Work

Further Principles:

• Teach Learning
• Small Initial Investment
• Play to Win
• Concrete Experiments
• Open, honest Communication
• Work with people’s instincts – not against them
• Accepted Responsibility
• Local Adaptation
• Travel Light
• Honest Measurement