Cities and communities are deeply immersed in the assessment and planning of Smart Cities projects, as transformative applications and solutions are impacting the market. The pathway from powerful Smart Cities projects to comprehensive Smart Cities plans is a significant leap, given the diverse set of needs, applications, and solutions that are shaping each city's vision. The ATIS Technology Roadmap is focused on the key technological developments that will enhance the long-term planning for Smart Cities. It is targeted to the Smart Cities' planners, technology advisors, and key decision-makers who are faced with developing comprehensive long-term visions for their municipalities and citizens.