STEFANIA GNESI is Director of Research and head of the Formal Methods and Tools Laboratory at ISTI-CNR (Istituto di Scienza e Tecnologie dell'Informazione-Consiglio Nazionale delle Ricerche) in Pisa, Italy. She was previously a lecturer in methods and tools for the specification and analysis of software systems at the University of Florence. TIZIANA MARGARIA is Full Professor in the Faculty of Mathematics and Natural Sciences of the University of Potsdam, where she holds the Chair of Service and Software Engineering at the Institute of Informatics. She has held positions at universities in Göttingen, Dortmund, and Passau, Germany, as well as in Sweden and Italy.