Therefore, on behalf of IFITT we are proud to present these Proceedings of the ENTER21 Ph.D. Workshop as we believe these papers represent the next generation of eTourism research. Not only do these proposals capture a wide range of research areas (smart tourism, technology development, social media analysis, and current issues in eTourism), but they also discuss issues and applications of new, cutting-edge technologies impacting travel and tourism globally. We hope that these research topics will continue to be developed and that these young scholars will continue to push the study of eTourism forward