This talk will delve into the detail of what makes a healthy building, from the point of view as to why we should care, what factors contribute to healthy indoor environments and what has changed in the context of the COVID-19 pandemic. Eszter will also explore the role that digitisation can play in making buildings healthier, including the role of sensors, data processing and current best practice. Finally, Eszter move away from the buildings and touch on how the broader urban environment contributes to health outcomes. to health outcomes.