When XP met outsourcing
Outsourcing is common for software development, and is the context for many projects using agile development processes. This paper presents two case studies concentrating on the customer role in projects using outsourcing and extreme programming (XP). The studies follow an interpretive approach based on in-depth interviews, and suggest some tensions between some contractual arrangements in outsourcing, and the XP process. In particular, one suggests XP worked well in the context of their particular outsourcing arrangements, and the other study suggests difficulty in aligning XP with a different set of outsourcing arrangements.
Martin, A. (Angela), Biddle, R, & Noble, J. (James). (2004). When XP met outsourcing.