The book provides rule-by-rule commentaries on the Regulation (EU) No 910/2014 of the European Parliament and of the Council of 23 July 2014 on electronic identification and trust services for electronic transactions in the internal market. The eIDAS regulation aims at proving a framework for secure and trustworthy electronic transactions in the EU. This volume offers comprehensive comments on all provisions of this regulation containing references to European scholarly writing. As a cross-border project this book is written by an international group of contributors and provides analysis with the view from different European countries. In order to assess the arising legal issues the contributions to this book reflect both aspects of the eIDAS regulation: On one hand the technological-neutral approach intended by this regulation, but also the nevertheless technically determined definitions and provisions of this very specific field of law. Dr Dr h.c. Alessio Zaccaria was a full Professor of civil law at the University of Verona. Dr Martin Schmidt-Kessel is Director of the Research Center for Consumer Law and Professor for German and European Consumer Law, Private Law and Comparative Law, University of Bayreuth Dr Dr h.c. Reiner Schulze is a Professor of German and European civil law at the Westphalian Wilhelms-University of Muenster and Director of the Centre of European Private Law. Alberto M. Gambino is a full professor at European University of Rome and President of the Italian Academy of the Internet Code (IAIC).