This workshop of the CAP4CITY (Erasmus+ Strengthening Governance Capacity for Smart Sustainable Cities) project is to promote and stimulate the discussion and networking in the area of Digital Government. Smart Sustainable Cities and related concepts of Digital, Intelligent and Smart Cities represent a progression of how cities around the world apply digital technology to serve their populations, pursue sustainable socio-economic development, and transform themselves in the process, and require strong capacity for public governance in the digital world. In order to identify the gaps concerning missing knowledge and training needs in this area we propose to validate a Smart Sustainable Cities roadmap through a scenario-building approach.Trabajo publicado en Chen, Y. C., Salem, F., Zuiderwijk, A. (eds.). <i>dg.o 2019: Proceedings of the 20th Annual International Conference on Digital Government Research</i>. Association for Computing Machinery: New York, 2019.Facultad de Informática