Stephan Kreissler is a co-founder and partner of Digitalisten, an SEO and conversion optimization agency and Austria's first agency specialized solely in native advertising, AdsThatWork. Additionally, he holds stakes in various startups and companies, and has served as the managing director of the interactive advertising bureau (IAB Austria) and was the digital director of MediaCom Austria. He has also held various positions within Austrian media companies. Kreissler is actively involved as a board member in the Marketing Club Austria, where he initiated and now leads the Digital Marketing Expert Unit. He served as a board member for many years in IAB Austria and the Forum Mediaplanung Association. Currently, he is a member of the development team for the Digital Marketing program at FH St. Pölten and has been teaching as a lecturer for many years.