iSPIRT Foundation is a non-profit tech think tank that drives orbit shifts through volunteerism. The document discusses iSPIRT's volunteer model, which aims to trigger volunteers through its mission and impact. Volunteers are described as thinkers and doers who build digital public platforms, standards, policies, and more. The session highlights some of iSPIRT's orbit shift challenges in areas like lending, payments, and digital infrastructure. It provides information on how to volunteer and the onboarding process, which involves reading materials, discussions, and a knowledge quiz before taking on challenges.