Klaus Pohl is Professor for Software Systems Engineering at the University of Duisburg-Essen, Germany, director of paluno – The Ruhr Institute for Software Technology – and served as scientific founding director of Lero, the Irish Software Engineering Research Centre. Klaus is founding member of IREB (Intl. Requirements Engineering Board), and key contributor to the CPRE certification for requirements engineering professionals. Among others, he was PC (Co-)Chair of ICSE (ACM/IEEE Intl. Conference on Software Engineering), RE (ACM/IEEE Intl. Conf. on Requirements Engineering), REFSQ (Requirements Engineering: Foundation for Software Quality), and CAiSE (Intl. Conference on Advanced Information Systems Engineering). Klaus is (co-)author of more than 300 peer-reviewed publications and several text books. As a consultant, advisor, and expert he supports national and international companies, research associations and research programs.