This is the first qualitative empirical study of international development volunteering. The book contributes theoretical knowledge on International Volunteering Sending Agencies (IVSAs) and examines practitioner experience in development volunteering in the context of emerging policy developments. Critical analysis highlights the impact of global and social changes and provides a nuanced understanding of development volunteer motivation, and the relationship between volunteers and sending agencies. The book also puts forward an agenda and model for volunteer sending that addresses the complexities and diversity of the volunteer experience.