Natalia Kliewer is a Professor of Information Systems in the School of Business and Economics at Freie Universität Berlin. Jan Fabian Ehmke holds a chair of Management Science in the School of Economics and Management at Otto-von-Guericke University Magdeburg. Ralf Borndörfer is a Professor of Discrete Mathematics in the School of Mathematics at Freie Universität Berlin and also Head of Department Optimization at Zuse Institute Berlin.