The research fellow of our institute presents in his newly published book the regulatory challenges of horizontal (social media and search engines), and vertical (online matching software, and marketplaces) platforms, as well as the legal problems raised by artificial intelligence and robots. The main perspective of the book is, that the problems in legal regulation is mainly caused by the crises of the narratives and metaphors behind the traditional legal concepts, like “intermediary”, “media”, and “publicity”. The book also presents the copyright, labour law, data-, and consumer protection aspects of the platforms. In its last chapter it deals with the challenges that legal profession and legal science is facing in this new era.