Extreme Programming (XP)

A flavor of Agile that takes the beneficial elements of traditional software engineering practices to “extreme” levels. It is characterized by:

• Frequent "releases" in short development cycles
• Programming in pairs or doing extensive code review
• Unit testing of all code
• Avoiding programming of features until they are actually needed
• Flat management structure
• Code simplicity and clarity
• Expecting changes in the customer's requirements as time passes and the problem is better understood
• Frequent communication with the customer and among programmers.