olemus
tarkvara välearenduse karkass, mis taotleb kvaliteetse tarkvara loomist
= an agile software development framework that aims to produce higher quality software

ülevaateid
http://www.extremeprogramming.org/

https://en.wikipedia.org/wiki/Extreme_programming

https://www.altexsoft.com/blog/extreme-programming-values-principles-and-practices/

https://www.knowledgehut.com/blog/agile/extreme-programming

https://www.linkedin.com/pulse/extreme-programming-tips-advantages-ekaterina-novoseltseva

https://www.oreilly.com/library/view/extreme-programming-explained/0201616416/