The proceedings of the XXIX FIDE Congress in The Hague in 2020 are published in four volumes. This book (Vol. 3) contains the reports of the General Rapporteurs (Nicolas Petit and Pieter Van Cleynenbreugel), the Institutional Rapporteur (Thomas Kramler) and the National Rapporteurs on Topic 3: EU Competition Law and the Digital Economy: Protecting Free and Fair Competition in an Age of Technological (R)evolution.