XProc, or the XML Pipeline Language, has every potential to become one of the most useful new XML technologies around. The language has recently become a W3C Candidate Recommendation and is gathering growing interest in the XML community, both from the users and implementers. Following the progress of the specification, and the evolution of the language to its present form, XProc has been successfully deployed in a dynamic content delivery platform, where it has quickly proved its strengths and established itself as the primary technology for XML data manipulations.