The BIG project aims to establish a public-private forum on big data in Europe. It will bring together stakeholders from industry and research to develop a shared vision for big data in Europe over the next 5-10 years. The project will identify existing big data technologies, understand how big data can be applied across sectors, and develop roadmaps for specific sectors. It seeks to increase European competitiveness and position big data research priorities in the EU framework program Horizon 2020. The project is coordinated across four work packages covering management, strategy and operations, dissemination, and establishing the public-private forum.