Population health addresses the health status and health issues of the aggregate population. It brings significant health concerns into focus and addresses ways in which communities, healthcare providers, and public health organizations can allocate resources to overcome the problems that drive poor health conditions in the population, e.g. diabetes, obesity, autism, heart disease, etc. Information technology is a part of the core infrastructure on which population health can be assessed and addressed. In this section, articles will describe population health in more depth and will explain the role of information technology in improving population health.