I was a Senior Research Scientist at the Deutsche Telekom Laboratories in Berlin, Germany, from May 2005 to July 2008. Before, from November 2002 to March 2005, I was a PostDoc in the Rice Networks Group of Prof. Edward Knightly at Rice University. I worked there in the Lab for Software Technology at the Department of Computer Science . My PhD advisor was Prof. Thomas Gross. . After July 2008 I joined the Credit Suisse Group in Zurich, Switzerland. I joined the Network Research Group of the Deutsche Telekom Laboratories (or brief T-Labs) because it offers a challenging and inspiring combination of academic freedom and applied, business-related research. In particular, I profit from the practical know-how of the Deutsche Telekom to deploy and run networks, the user-oriented objectives and the business- driven thinking. At the same time, I have the freedom and challenge to define my own research projects, to attract funding, to manage them and to successfully generate new knowledge of value for research in general and of interest for the Deutsche Telekom in particular.