A Smart City integrates physical, digital and human systems to deliver a sustainable, prosperous and inclusive future for its citizens. Many of these innovative solutions will be based on sophisticated information and communication technologies. However, technological complexity, as well as the complexity of the various sectorial services involved within a Smart City, require a system approach to standardisation. Such an approach must promote the greatest possible reuse of existing open standards to accelerate Smart City deployment. In an effort to leverage the promise of a system approach, ESPRESSO will focus on the development of a conceptual Smart City Information Framework based on open standards. This framework will consist of a Smart City platform (the “Smart City enterprise application”) and a number of data provision and processing services to integrate relevant data, workflows, and processes. The project will build this framework by identifying relevant open standards, technologies, and information models that are currently in use or in development in various sectors.