Explore the groundbreaking collaboration between technology giants and public health departments in response to the COVID-19 pandemic through this insightful panel discussion from USENIX Enigma 2021. Delve into the decision-making process, tradeoffs, and outcomes of implementing app-based contact tracing. Learn from a diverse group of experts in policy, epidemiology, law, and public health as they examine the challenges and successes of this cross-disciplinary effort. Gain valuable insights into the future of digital contact tracing and its potential impact on managing public health crises. Discover how Google, Apple, and health authorities joined forces to create a mechanism for notifying individuals of potential virus exposure, and consider the implications for privacy, technology, and public health policy.