This document identifies good practice case studies of smart city responses to COVID-19 through the use of smart technologies, smart data, smart decision-making and smart ways of working. In particular, it aims to demonstrate how the principles for smart city operating models recommended in ISO 37106 can deliver improved outcomes in public-health emergency management (PHEM), at every stage of the command-and-control process for emergency management and incident response set out in ISO 22320. This document is intended to inform ISO 37113, which recommends a framework of good practices that can be used in responding to future public-health emergencies.