The National Council of Engineers (CNI) entrusts Ares 2.0 with the realization of the research “Open data: the innovation of the public administration at the service of the new entrepreneurship in ICT”. The report describes in detail the state of the art and the scenarios of Open Data in Italy, analysing the socio-economic value deriving from open data, the reference standards, the procedures necessary to “free” public data, and possible applications in the technical field