The SoBigData research infrastructure, funded by the European Union's Horizon 2020 research and innovation program, offers datasets from various institutions in multiple research fields, such as mathematics, information and communications technology, and human, social and economic sciences. A consortium of 12 research institutions from Italy, the UK, Germany, Estonia, Finland, the Netherlands, and Switzerland, it intends to promote exploration within five big themes which are City of Citizens, Well-being and Economy, Societal Debates, Migration Studies, and Sports Data Science. It also offers additional datasets and expert support through Virtual and Transnational Access exploratory and open project calls.