12 Practices

Extreme Programming consists of the following 12 practices:

• Planning Game
• Small Releases
• Metaphor
• Simple Design
• Testing
• Refactoring
• Pair Programming
• Collective Code Ownership
• Continuous Integration
• Sustainable Pace (used to be: 40-hour Week)
• On-site Customer
• Coding Standards

Essential Practices

Ken Auer and Roy Miller propose in their book ("Extreme Programming Applied", page 71), that although it is better to start with all 12 above mentioned practices, it is also feasable to start with only the following 6 practices. Ken and Roy call them essential practices.

1. Planning Game
2. Small Releases
3. Testing
4. Pair Programming
5. Refactoring
6. Continuous Integration