It is involved in network research, in areas such as carrier class network technologies, photonic switching, federated network architectures and virtualisation. In 2013 a substantial network migration program was completed, meaning users could be offered multiple 100 Gbit/s links, with the core network supporting 500 Gbit/s and a network design that will support up to 8Tbit/s. Already, over 1 Petabyte of data are transferred every day via the GÉANT backbone network. The GÉANT project is a collaboration between 41 partners: 38 European NRENs and NORDUnet (representing the five Nordic countries). The full list of NREN project partners are available on the website. GÉANT links to research networks in other world regions, including:  These links not only help international research collaboration but also aid with projects that deliver societal benefit, such as e-health, telemedicine and weather forecasting/disaster warning systems. Allowing researchers to work within their own countries also stems migration from less developed countries, helping bridge the digital divide. GÉANT is used by research communities, such as: