Which are the Extreme Programming "core" practices?

Question

Recently, I began reading about agile methodologies and XP in particular. I am a bit confused, though, about what are considered the practices involved in extreme programming.

More precisely: Wikipedia reports 12 practices, which I someway believe to be the "classic" ones.

Both Kent Beck and Ron Jeffries indicate 13 practices (you can find the links at the bottom of wikipedia page about "Extreme Programming Practices", I cannot post them here since I am new user of Stack Overflow), while this review of Kent Beck's "XP explained" (2nd edition) report more than 20 somewhat different practices.

As a complete beginner in the topic (and basically as a complete beginner as a programmer), I would like to be enlightened on the matter. My impression is that I should look at Beck's book, since the second edition has been written after several years of XPerience, but I can find a lot less material based on that.

Answer 1

In the first edition of "XP explained", there was twelve practices.

In the second edition, the practices have been reorganized: some have been renamed or merged, some have been removed (Metaphor), and there now are: thirteen primary and eleven corollary practices.

Under the "First Edition Practices" topic in the page you mentioned, one can find the original list of twelve practices and how they appear in the update.

While reading, you'll certainly will people differentiating XP and XP2e (XP second edition).

Likely, there was four principles in the first edition and a fifth one (Respect) was introduced with the second edition.

Answer 2

As explained at Blog on Agile "https://manojgupta2000.wordpress.com/2010/05/19/agile-project-management-brief-introduction" , there are following methods

• Scrum: • Crystal: • Feature Driven Development: • Lean Development: • Dynamic Systems Development Methodology(DSDM):