This book develops a timely critique of the complex trends emerging in EU integration as it responds to the 'big issues' of our time. Repeated economic crises, the climate emergency, digitalisation and geopolitical turmoil are all having a profound societal and economic effect. The EU Commission has been adding these 'big issues' as public interest justifications for its competition policy and is adjusting existing approaches and instruments accordingly. This is not without its constitutional implications. Firstly, it impacts on the limits of EU competition law in light of the Treaties. Secondly, it affects the relationship between the relevant actors and the processes through which EU competition law is implemented. This collection brings together EU institutional and competition lawyers, to reflect on the constitutional challenges and governance questions. The essays focus on the substantive and procedural developments across the three main policy areas of EU competition law: state aid, antitrust and merger control. Both EU constitutional and competition lawyers will be interested in this important new collection.