Christos I. Bouras is Full Professor at the University of Patras, Department of Computer Engineering and Informatics. Also he is a scientific advisor of Research Unit 6 at Computer Technology Institute and Press – Diophantus, Patras, Greece. His research interests include 5G and Beyond Networks, Analysis of Performance of Networking and Computer Systems, Computer Networks and Protocols, Mobile and Wireless Communications, Telematics and New Services, QoS and Pricing for Networks and Services, e-learning, Networked Virtual Environments and WWW Issues. He has extended professional experience in Design and Analysis of Networks, Protocols, Telematics and New Services. He has published more than 450 papers in various well-known refereed books, conferences and journals. He is a co-author of 9 books in Greek and editor of 2 in English. He has been a member of editorial board for international journals and PC member and referee in various international journals and conferences. He has participated in R&D projects.