This 5th volume in the Münster Colloquia on EU Law and the Digital Economy focuses on one of the most important challenges faced by private law in this era of digitalization: the effects of data as counter-performance on contract law; a phenomenon acknowledged by the EU legislator in the new Digital Content Directive 2019/770. In this volume, legal experts from across Europe examine various issues, in particular contract performance and restitution, and the relationship between contract law and data protection, central to the question: Contract law 2.0?