Prof. dr. ir. Cees de Laat is chair of the System and Network Engineering research group at the University of Amsterdam. Research in his group includes optical/switched networking for Internet transport of massive amounts of data in PetaScale eScience applications, semantic web to describe networks and associated resources, distributed cross organization authorization architectures, service composition in virtualized (cloud) context and systems, security & privacy of information in distributed environments. He serves as board member of Open Grid Forum and is chair of GridForum.nl. He is co-founder and organizer of several of the past meetings of the Global Lambda Integrated Facility (GLIF) and founding member of CineGrid.org.