This book provides a concise overview of regulation, the primary mode of modern governance by, within, and beyond the state. Martino Maggetti delves into the fundamental concepts and theoretical frameworks underpinning the study of regulation, charting its historical evolution, current practices, and evolving complexities.Adopting a comparative approach, Maggetti analyzes public, private, and hybrid forms of regulation in the context of diverse countries and sectors. Chapters discuss the roles of regulatory agencies and networks, reflecting on performance and evaluating alternatives to traditional regulation such as nudges. They address critical issues relating to distrust and populism, considering their impact alongside the emerging challenges presented by artificial intelligence and the ecological transition. Ultimately, the book highlights the need for adaptive, experimental, participative, and context-sensitive approaches to regulation and governance, underscoring the crucial role these frameworks play in modern society.Introduction to Regulation and Governance is an essential resource for students and scholars of political science, public policy, public administration, law and economics. Its practical insights are also beneficial to policymakers, civil servants, and international policy officers.