October this year, India hit the 100-crore COVID-19 vaccine milestone. The credit for the feat, to a great extent, goes to the CoWIN app. The platform was launched on January 16, 2021 by the Modi government for the vaccination process and real-time monitoring of vaccine delivery. In time, the app emerged as the digital backbone of India’s COVID vaccination drive and connected stakeholders at various levels of India’s health system, including vaccine manufacturers, administrators and verifiers, public and private vaccination facilities, and vaccine recipients.