The "Routledge International Handbook of Participatory Design," edited by Jesper Simonsen and Toni Robertson, provides a comprehensive overview of participatory design (PD) and its applications. The book is structured into two main sections. **Section I** focuses on the foundations and challenges of PD, covering topics such as heritage, design principles, ethics, ethnography, methods, and tools. Key contributors include Finn Kensing, Joan Greenbaum, Liam J. Bannon, Pelle Ehn, Ina Wagner, Jeanette Blomberg, Helena Karasti, Tone Bratteteig, Keld Bødker, Yvonne Dittrich, Preben Holst Mogensen, Eva Brandt, Thomas Binder, and Elizabeth B.-N. Sanders. **Section II** explores outstanding applications of PD in various contexts. It includes case studies from organizations like the Global Fund for Women, the Health Information Systems Programme (HISP), and ACTION for Health, highlighting how PD has been integrated into everyday work and influenced technology design, practice, and policy. The section features contributions from Randy Trigg, Karen Ishimaru, Jørn Braa, Sundeep Sahay, and Ellen Balka. The book also includes a list of illustrations, a list of contributors, and an index.The "Routledge International Handbook of Participatory Design," edited by Jesper Simonsen and Toni Robertson, provides a comprehensive overview of participatory design (PD) and its applications. The book is structured into two main sections. **Section I** focuses on the foundations and challenges of PD, covering topics such as heritage, design principles, ethics, ethnography, methods, and tools. Key contributors include Finn Kensing, Joan Greenbaum, Liam J. Bannon, Pelle Ehn, Ina Wagner, Jeanette Blomberg, Helena Karasti, Tone Bratteteig, Keld Bødker, Yvonne Dittrich, Preben Holst Mogensen, Eva Brandt, Thomas Binder, and Elizabeth B.-N. Sanders. **Section II** explores outstanding applications of PD in various contexts. It includes case studies from organizations like the Global Fund for Women, the Health Information Systems Programme (HISP), and ACTION for Health, highlighting how PD has been integrated into everyday work and influenced technology design, practice, and policy. The section features contributions from Randy Trigg, Karen Ishimaru, Jørn Braa, Sundeep Sahay, and Ellen Balka. The book also includes a list of illustrations, a list of contributors, and an index.