​This book provides an account of the reforms undertaken in German federalism throughout the 2000's. It explores the consequences of the historic changes made to the German federal order through detailed analysis of a set of unique case study areas. It also evaluates the handling of the Covid-19 pandemic on German federalism, and the relationship between party politics and federalism in Germany. The authors investigate what happens when policy responsibility is decentralized. The reforms undertaken in Germany fundamentally altered the roles played by the federal and state-level governments in several policy fields, and the question as to what kind of impact this has for policy itself is a global one. In a world that sees an increasing trend towards the decentralization of political authority, this book offers insights and lessons that have a practical application on a global scale. It will find the interest of students and scholars in countries worldwide which are grappling with the nature of policy responsibility across levels of political authority.