Sergio has been involved in grid and distributed computing since 2002, when he joined INFN to work on interoperability aspects of the emerging European Grid. He contributed to standardisation activities within the Open Grid Forum (especially in the area of information modelling). In 2010, he joined EGI.eu to steer the strategy and policy activities of the European Grid Infrastructure. He is collaborating with the Helix Nebula initiative for integrating commercial cloud providers with publicly funded e-infrastructures for a European Science Cloud. He also participated in the e-FISCAL project to assess the cost of publicly funded computing in Europe. Sergio holds a PhD in Computer Science from the University of Bologna and a MSc in Computer Science Engineering from the University of Pisa.