Chapters review key concepts and ideas that form the backbone of modern governance studies, offering vital insights into how this contributes to the development of social science research. The comprehensively updated second edition provides new insights on governance in the contemporary political landscape of global authoritarian populism, emergent progressive movements and the fallout of the COVID-19 pandemic. Delivering a foundational conceptual toolkit for research, this Handbook reveals the diversity of contemporary governing practices as changing political dynamics lay the groundwork for the next generation of theories of governance. Sketching a comprehensive map for governance research, this Handbook is a crucial resource for scholars and researchers of governance, as well as those in political science, public policy and public management in need of a solid understanding of core governance theories. It also offers policymakers and practitioners an agenda for navigating the future of governance in a rapidly changing global political order.