Ariel Ezrachi is the Slaughter and May Professor of Competition Law and a Fellow of Pembroke College, Oxford. He serves as the Director of the University of Oxford Centre for Competition Law and Policy. He is co-editor-in-chief of the Journal of Antitrust Enforcement (OUP) and the author, co-author, editor and co-editor of numerous books. His recently published papers focus on the digital economy, e-commerce, parity clauses, marketplace bans, vertical agreements, buyer power and the limits of competition law. They include the award winning papers 'Sponge' and 'Artificial Intelligence & Collusion' and the BEUC consultation paper on 'EU competition law and digital economy'. He is also co-author of the report on 'Digital Platforms' (Stigler Center, Chicago University, Booth School of Business). His work on algorithmic collusion (together with Prof Stucke) has been central to policy discussions in international organisations and competition agencies (including, among others, the CMA, OECD, UN, House of Lords, Monopolkommission, Autorite de la concurrence and the Bundeskartellamt). He is part of a reserch project on Competition Policy and Economic Inequality, funded by the Leverhulme Trust.Prof. Ezrachi develops training and capacity building programmes in competition law and policy for the private and public sectors, including training programmes for European judges endorsed and subsidised by the European Commission. He is an Academic Advisor to the European Consumer Organisation - BEUC, member of the Independent Committee on Digital Platforms, member of UNCTAD Research Partnership Platform, and a former Non-Governmental Advisor to the ICN.