Urban areas continue to be the centers of human activities and remain the loci of resource and service consumption, economic transactions, and innovation. In fact, the projections in parts of the world point to rapid urban growth. Other areas of the urbanized world are experiencing population decline, reduced revenues, concentrated poverty, and higher demands for services. Whether growing or shrinking, cities and metropolitan areas face challenges of infrastructure, public health, transportation, public safety, and environmental sustainability, to name but a few. To address some of these challenges, the cities of today are increasingly leveraging advanced computing and communication technologies as well as big data analytics under the umbrella of smart cities and urban informatics. Extensive research is taking place in a wide range of relevant research areas to address some of these emerging challenges. Smart City initiative is of global importance especially undertaken by cities in US, India, multiple EU countries, and UAE governments in recent times.