Yane Svetiev’s book, Experimentalist Competition Law and the Regulation of Markets, was launched at an event organized by the University of Amsterdam’s Centre for European Law and Governance (ACELG) and Centre for European Studies (ACES). The book provides an account of the evolution of EU competition law enforcement through the prism of experimentalist governance. Within an experimentalist governance architecture, regulation and enforcement are recursively re-formulated through monitoring and comparing implementation experience from different local contexts. Compared to more traditional legal enforcement that proceeds through identifying and punishing infringements, experimentalist implementation is problem-oriented and collaborative. Moreover, experimentalist governance does not rely on controlled experiments to identify universal causal mechanisms or successful interventions. Rather, as Svetiev explains, it is pragmatic: it relies on “prototyping solutions to specific problems followed by iterative adaptation to refine the prototype” and to then “possibly scale it up or diffuse it” to other contexts.