The creation of a connected Digital Single Market is one of the top priorities of European Commission. The publication deals with the challenges for European Contract Law on the sections 3D-Printing, Share Economy and the Internet of Things. The roll-out of digital products and especially the Internet of Things, Share Economy and 3D-Printing creates new challenges for legislators and legal doctrine. The publication deals inter alia with the impact on contractual duties, the consequences for contractual and extra-contractual liability and the notion of consumer. With contributions by Gerd Billen, Larry A. DiMatteo, Natali Helberger, Geraint Howells/Christopher Willett, Rafael Illescas Ortiz, Robert MacDougall, Caroline Meller-Hannich, Erica Palmerini/Andrea Bertolini, Christian Twigg-Flesner, Rolf H. Weber, Christiane Wendehorst.