The book, organized in three parts, offers a guide to constructing financial instruments based on cash waqf in alignment with the Sustainable Development Goals. The first part discusses the alignment between the Shari'ah economic objectives and the SDGs, the Islamic social finance concept, its instruments and institutions and the intersection between Islamic finance and Islamic social finance. The second part presents a product structure that is based on cash waqf and is targeting the SDGs specifically. Some of these product structures involve zakat collection. The third part of the book presents the methodology to gather all these product structures in a national cash waqf ecosystem that is targeting SDGs. The aim of this ecosystem is to increase the impact of the various initiatives and instruments. In addition to this, the third part of the book presents the concept of Waqf offshore centers and the methodology to conceive and implement them. The aim of these Waqf offshore centers is to connect national cash waqf ecosystems and individuals with investment opportunities bringing more impact. This book will be of interest to academics, researchers, and practitioners of not only Islamic finance but sustainable finance.