This collection of essays on the reform of public procurement law and policy honours the contribution of Sue Arrowsmith as the leading scholar in the field. The book is divided into 3 main parts – on the UK, the EU, and the world – and focuses on central reform themes that have characterised the evolution of public procurement law and policy in the past decades. These include sustainability, complex contracts, review and remedies, electronic procurement, and defence procurement, as well as topics such as debarment, the overall development of EU procurement reform, the very nature of procurement law, or the regulation of UK procurement law after Brexit. The book also covers the dynamic reform process of the EU Procurement Directives and case law, the UNCITRAL Model Law on Procurement, the WTO Government Procurement Agreement, and national systems including the US, China, Africa, and the UK. The chapters are written by experts in specific topics of procurement reform from Africa, Asia, the Americas, and Europe with backgrounds in academia, legal practice, and international organisations. The reader is provided with a diverse set of insights into the objectives, approaches, priorities, and future direction of public procurement reform.