Arne Roock works as a coach and trainer for it-agile GmbH in Germany. As an expert on lean and Kanban, he's been observing the evolution of Kanban in Germany over the past few years. Mr. Roock has written several papers on lean/Kanban and translated into German David J. Anderson's book Kanban: Successful Evolutionary Change for Your Technology Business. Most recently, he cofounded the first Limited WIP Society in Germany.