Аннотация:This introductory chapter provides an overview of what global value chains (GVCs) are, and why they are important. It presents a genealogy of the emergence of GVCs as a concept and analytical framework, and some reflections on more recent developments in this field. Finally, it describes the chapter organization of this Handbook along its five cross-cutting themes: mapping, measuring and analysing GVCs; governance, power and inequality; the multiple dimensions of upgrading and downgrading; how innovation, strategy and learning can shape governance and upgrading; and GVCs, development and public policy.