The Health Data Initiative aims to unleash health data and catalyze innovation by making large amounts of health-related data from government sources openly available. This includes data on community health, healthcare providers, government spending, individual health records, medical knowledge, and consumer products. The goal is to fuel an "ecosystem of innovation" where startups and developers create new tools and services to help consumers, employers, healthcare providers, journalists, and local leaders improve health. Examples include apps and websites that help consumers manage their health, tools that help doctors deliver better care, and products that help communities analyze health trends. The HDI hopes to showcase and promote these innovations through challenges, meetups, and annual forums.