Evolution of the WLCG Information Infrastructure Julia Andreeva, Alexey Anisenkov, Alessandro Di Girolamo, Alessandra Forti, Stephen Jones, Balazs Konya, Andrew McNab and Panos Paparrigopoulos EPJ Web Conf., 245 (2020) 03029 Published online: 16 November 2020 DOI: 10.1051/epjconf/202024503029