The European Union (EU) has become a guardian of digital governance. But, how did this happen? How has the EU been able to develop its comprehensive body of rules and policies, and what does it say about the European integration project? This open access book, written by high-ranking officials and independent experts in European digital policy, tells this story. Using accessible language and, often, first-hand experiences, the book responds to the questions of how Europe's responsibilities have evolved and to what extent digital policy is a driver for European integration. It advances concepts like digital sovereignty, strategic autonomy and economic security in a wide range of thematic case studies: from artificial intelligence, data, to platform regulation. In addition, the book examines the international aspects of the EU's digital policy and delves into Europe's global governance ambitions, making it a volume of interest to journalists, academics, and business professionals.