The document outlines Barcelona's digital city roadmap for 2017-2020. The objectives are to empower citizens through open source and agile transformation of city hall, develop a city data infrastructure to drive innovation, and diversify and strengthen the tech economy. Key initiatives include adopting agile methods, ensuring data and technological sovereignty for citizens, and launching flagship pilots like using big data for affordable housing and a central data analytics office. The roadmap aims to transform government and foster an open, participatory digital innovation ecosystem in Barcelona.