The document discusses smart city infrastructure frameworks. It describes key elements of smart city infrastructure including physical infrastructures like transportation and energy; environmental and living entities like citizens and ecosystems; and ICT systems that allow interactions and information flow. Foundational infrastructures for smart cities include critical human infrastructures, energy, water, transportation networks, ICT networks, data integration, buildings and mobile devices. Stakeholders in smart cities include citizens, industries, city authorities, infrastructure operators, and more. Five essentials for smart city ICT networks are deployment of broadband, use of smart devices, developing smart urban spaces, web applications and data analytics, and opening government data.