Markus Hofmann is Director of Services Infrastructure Research at Bell Labs/Lucent Technologies. He received his PhD in Computer Engineering from University of Karlsruhe, Germany, in 1998 and joined Bell Labs Research the same year. Markus is known for his pioneering work on reliable multicasting over the Internet and for defining and shaping fundamental principles of content networking. He is Chair of the Open Pluggable Edge Services (OPES) Working Group in the IETF since it was chartered in 2002. More recently, Markus' work has extended into the areas of VoIP and converged communications. Markus is also on the Editorial Board of the Computer Communications Journal and has published numerous papers in the multicasting and content delivery area. His PhD thesis won the 1998 GI/KuVS Award for best PhD thesis in Germany in the area of Telecommunications, and also the 1998 FZI Doctoral Dissertation prize awarded by the German Research Center for Computer Science.