Book excerpt: In this forward-thinking book, Rafał Riedel and Jakub Anusik explore the dynamics and determinants of one of the most salient issues facing contemporary Europe: differentiated integration. Going beyond static models of differentiated integration in Europe built on legal-institutional criteria, Riedel and Anusik capture the dynamism of the system by employing both a political economy perspective and the varieties of capitalism framework. This title contains one or more Open Access chapters.