ABSTRACT The COVID-19 pandemic compelled nonprofit human service organizations (NPHS) to rapidly adapt to heightened service demands while prioritizing the well-being of their staff and volunteers. Although digital platforms hold promise in facilitating NPHS adaptation, little is known about their impact during the crisis. How and through what pathways do digital platforms help NPHS adapt their service roles in times of crisis? Did digital platforms with different types of sponsorship vary in the way they affect NPHS’s roles? Our study, based on 94 interviews in China, reveals that digital platforms assisted NPHS through three pathways: reducing transaction costs in stakeholder engagement, mitigating information asymmetry in targeting service recipients, and promoting shared responsibility for volunteer participation. Different sponsorship types influenced these pathways: government-sponsored platforms enhanced legitimacy, business-sponsored platforms leveraged private resources, and nonprofit-sponsored platforms bolstered citizen trust. This research informs scholars and practitioners on understanding how NPHS remained agile and innovative while facing extraordinary external challenges.