Appendix A. An Overview of Extreme Programming

This appendix serves as a brief introduction to the main ideas of Extreme Programming (XP). If you are already familiar with XP you can safely skip this appendix. If not, please use this appendix as an introduction to XP and then proceed to one of the fine books that explain XP in detail.[1]

We’ll look first at the people (or roles) involved in an XP project. Next we’ll look at the twelve main practices of XP. We’ll conclude by considering the values of an XP team.


The XP customer role is responsible for writing stories, prioritizing stories, and writing and executing tests that demonstrate that stories were developed as expected. The XP customer may be a user of the system being built but ...

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