Ron Jeffries (born December 26, 1939) is one of the three founders of the Extreme Programming (XP) software development methodology circa 1996, along with Kent Beck and Ward Cunningham.

He is an author of Extreme Programming Installed, the second book published about XP.

I was fortunate enough to get involved with Extreme Programming at the beginning, and I've been doing nothing but helping people with it ever since.

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