This book documents the research I conducted on the subject of Electronic Data Inter change during my time at the Institute of Business Informatics, University of Berne, Switzerland. In this effort I enjoyed a great deal of help from numerous others, in cluding professional colleagues, interview partners, and members of my family. Even though I cannot possibly mention them all, I would like to express my sincere gratitude for their selfless support. Above all, I am grateful to Prof. Dr. Gerhard Knolmayer who contributed to the book both in its formative stages and throughout its development....