Over the last years large amounts of datasets has been opened for the public. Governments from all over the world have embraced open data initiatives resulting in a variety of experiences. Portals for releasing open data have been developed, hackatons organized, apps are increasingly being developed and many practices have become available. Yet the practices are diverse and there is hardly any overview of generic methods, principles and practices for the opening and use of open data. This workshop aims at bringing together various stakeholders in the field of open data to discuss the uptake and utilization of open data. The fragmented landscape will be brought together and practices will be presented and shared. In particular, the problems of scaling up publishing and usage of open data will be tackled.