Prof. Dr. Dirk Riehle, M.B.A., is the Professor of Open Source Software at the Friedrich-Alexander University Erlangen-Nürnberg. Before joining academia, Riehle led the Open Source Research Group at SAP Labs, LLC, in Palo Alto, California (Silicon Valley). Riehle founded the Open Symposium (OpenSym, formerly WikiSym). He was the lead architect of the first UML virtual machine. He is interested in open collaboration principles, methods, and tools, most notably open source and inner source software development. Prof. Riehle holds a Ph.D. in computer science from ETH Zürich and an M.B.A. from Stanford Graduate School of Business. He welcomes email at dirk@riehle.org, blogs at https://dirkriehle.com, and tweets as @dirkriehle.