X-Road is an open source, distributed data exchange layer solution that enables organizations to exchange information over the Internet. X-Road ensures confidentiality, integrity and interoperability between data exchange parties. X-Road is released under the MIT open source license. X-Road is used nationwide in the Estonian data exchange layer X-tee and in the Suomi.fi Data Exchange Layer service in Finland. However, X-Road is not just for public sector organisations – all kinds of organisations regardless of size or type can use it. Two X-Road ecosystems can be joined together, federated. Federation enables easy and secure cross-border data exchange between countries using X-Road. Nordic Institute for Interoperability Solutions (NIIS) is an association founded jointly by Finland and Estonia. Its mission is to develop e-governance solutions, kicking off with X-Road. X-Road provides a solution to API management and its approach is quite different from other solutions on the market. In addition, the development model – two countries developing an open source solution that‘s used for implementing nationwide services in multiple countries – is quite unique even in global scale. The aim of the presentation is to discuss X-Road as a platform, its cross-border data exchange capabilities and its unique development model.