What Elements of XP are being Adopted by Industry Practitioners?

This research focused on the factors that impact implementing agile software development methodologies. Extreme programming is the most commonly implemented agile methodology. Information on agile methodology implementation was collected via an online survey instrument distributed to members of software process improvement user groups. During the course of the research, it was discovered that very few organizations implement all of the XP principles. Organizations are also modifying the XP principles to suit their corporate cultures and development environments. This research measured the degree to which each of the XP principles has been adopted and modified by industry practitioners