Book excerpt: The book examines the potential for regional competition law systems as enforcement tools in developing countries, based on a case study of the West African Economic and Monetary Union, the Andean Community and the Caribbean Community. It analyses the allocation of enforcement competences between the regional/supranational and the national level and formulates detailed guidelines on the optimal degree of centralization or decentralization. The book addresses all readers that are interested in the enforcement of competition law in developing countries. Moreover, it provides practical insights for public institutions that wish to identify or prevent possible misallocation of competences within regional competition law systems.