What if open data platforms where more collaborative ? Datachallenge offers a new way to leverage open data with citizens, companies at the scale of the city, the region... by proposing challenges around data, such as creating new services. See video on http://govjamparis.fr for more infos ! Authors : Romain Lalanne, head of Open Data, SNCF Charles Ruelle, CTO Etab Nettra Pan Sciences Po Caroline Kermarrec, service designer Loire Atlantique Region Olivia Zarcate, consultante marketing Tiphaine Gamba, consultante