Nordic Institute for Interoperability Solutions (NIIS) is a non-profit association with the mission to ensure the development and strategic management of X-Road® and other cross-border solutions for digital government infrastructure. NIIS is both a network and cooperation platform and executioner of IT developments in members’ common interests. The institute focuses on practical collaboration, sharing of experience and promoting innovation. The operating model of the institute is something unique in the world. The republics of Estonia, Finland and Iceland are members of NIIS, and the Faroe Islands and the Government of Åland are partners of NIIS.