Sixty years have now passed since the signing of the Treaty of Paris establishing the European Coal and Steel Community in 1951, and during that period competition policy has become firmly anchored as one of the key pillars of European integration. A regime of European competition governance has emerged that centers on the European Commission, specifically its Directorate-General for Competition (DG COMP), and has matured to tackle the four constituent parts of the EU competition policy brief, cartels, monopolies, mergers and state aid. The focus and enforcement of EU competition policy is constantly being reviewed in response to new challenges and opportunities as DG COMP seeks greater consistency in competition norms and greater policy convergence both within the EU and the wider global environment. The opening article of this volume introduces the context in which substantive changes to the EU competition regime has occurred in the twenty-first century. It identifies the major drivers for such change including economic interdependence, the proliferation of national competition laws, and the current financial and economic crisis, and describes how EU competition policy has evolved in response to these challenges.