Prof. Dr. Ralf T. Kreutzer is an emeritus professor of marketing at the Berlin School of Economics and Law. He has authored more than 65 specialist books on topics such as marketing, online marketing, digital transformation, artificial intelligence, and sustainability. He is an internationally respected keynote speaker, coach, and consultant. In 2023, he was inducted into the Hall of Fame of the German Dialogue Marketing Association.

Professor Kreutzer is a founding member of the consulting firm Green Elephant Consulting (www.green-elephant.info), which specializes in making sustainability feasible for companies.

Prof. Dr. Sonja Klose is a professor of marketing at the Berlin School of Economics and Law and is also active as a trainer, consultant, and coach. Previously, she worked as a marketing executive in various startups and taught at ESCP Business School, SRH University, and FOM University of Applied Sciences for Economics and Management.