Dr. Harilaos Koumaras was born in Athens, Greece in 1980. He received his BSc degree in Physics in 2002 from the University of Athens, Physics Department, his MSc in Electronic Automation and Information Systems in 2004, being scholar of the non-profit organization Alexander S Onassis, from the University of Athens, Computer Science Department and his PhD in 2007 at Computer Science from the University of Athens, Computer Science Department, having granted the four-year scholarship of National Centre of Scientific Research “Demokritos”. He has received twice the Greek State Foundations (IKY) scholarship during the academic years 2000-01 and 2003-04. His research interests include 5G, B5G, 6G, Distributed and Edge Cloud computing, mobile communication, NGN Architectures, Network Function Virtualization (NFV), Software-defined Networking (SDN), objective/subjective evaluation of the perceived quality of multimedia services, video quality and picture quality evaluation, video traffic modeling, Digital terrestrial television and video compression techniques. Currently, he is the author or co-author of more than 100 scientific papers in international journals, technical books and book chapters, numbering approx. 1200 non-self citations. Currently Dr. Koumaras is a research assistant professor at the Institute of Informatics and Telecommunications of NCSR “Demokritos”. He is also an editorial board member of the Telecommunications Systems Journal and a reviewer of various journals and magazines. Dr. Koumaras is a member of IEEE, SPIE and National Geographic Society.