The Rules of Extreme Programming

Planning

• User stories are written.
• Release planning creates the release schedule.
• Make frequent small releases.
• The project is divided into iterations.
• Iteration planning starts each iteration.

Managing

• Give the team a dedicated open work space.
• Set a sustainable pace.
• A stand up meeting starts each day.
• The Project Velocity is measured.
• Move people around.
• Fix XP when it breaks.

Designing

• Simplicity.
• Choose a system metaphor.
• Use CRC cards for design sessions.
• Create spike solutions to reduce risk.
• No functionality is added early.
• Refactor whenever and wherever possible.

Coding

• The customer is always available.
• Code must be written to agreed standards.
• Code the unit test first.
• All production code is pair programmed.
• Only one pair integrates code at a time.
• Integrate often.
• Set up a dedicated integration computer.
• Use collective ownership.

Testing

• All code must have unit tests.
• All code must pass all unit tests before it  can be released.
• When a bug is found tests are created.
• Acceptance tests are run often and the score is published.