The prevalence of digital affordances is the new reality of modern societies, nevertheless some market players are capable of achieving persistent dominance thus influencing our societal lives far beyond pure market impacts. This book analyses efforts made on European level to address the issue of digital transformation, while exploring recent regulatory and jurisdictional developments in the European Union. Our competition law expert authors put an emphasis on delivering theoretical explanations, providing insights into competition law assessments and related issues such as privacy concerns, the role of data and AI regulation.