Ozren Rafajac is an assistant professor at the University of Rijeka, Croatia, where he teaches e-business and cloud computing and a professor at the Polytechnic of Rijeka, Croatia, where he teaches sales management, HR management, business communications and digital marketing. He has worked on several EU-funded projects. His research interests focus on HR management, organisational intelligence, e-collaboration, communication, tourism, organisational development and leadership.. Alen Jakupović is a professor at the Polytechnic of Rijeka, Croatia, where he teaches several courses in programming and project design. His scientific and professional interests include metrics and methods for information systems development, artificial intelligence, intelligent systems development, information and business systems dependability and ICT in education.