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Dr. Konstantinos Lionakis is a Marketing and Sales professional involved in academic research and business consultancy, as well as an entrepreneur. Konstantinos holds a PhD in Marketing (awarded by Emerald), an MSc in Marketing and Communications from the Athens University of Economics and Business, and a degree in Mathematics from the University of the Aegean. He has extensive teaching experience at BA, BSc, MSc, MBA and Executive level in Marketing related courses such as Sales Management, Marketing Management, Services, Marketing Communication and Marketing Research, serving now as an adjunct lecturer of Marketing at the Athens University of Economics and Business and the Agricultural University of Athens, with student acknowledgments for excellence (teaching excellence awards 2012, 2019). His research has been presented at more than 30 international academic conferences, including the annual conferences of the AMA, EMAC, AMS, GMC and GSSI (having received a Best Paper Award for his paper on Marketing-Sales cooperation at the 2015 GSSI conference), and has been published in referred academic journals and the Greek economic press. He is serving as an ad-hoc reviewer at the international academic journals “Journal of Marketing Theory and Practice” & “Journal of Personal Selling & Sales Management”, as well as a reviewer and Session Chairman at the conferences of the European Marketing Academy (EMAC), and he is member of the board of Hellenic marketing association (ΕΛΑΜ). Beyond his academic work he is also a practitioner of Sales and Marketing as a freelance consultant for several firms since 2005, and an entrepreneur, as he is the founder and general manager of the tutorial school diatrivi for highschool students and the co-founder of the Bellagio trattoria.