The objective of the procurement is to establish a contract for a cloud based core system (the "OneTrack system") that shall support Vy's most business critical function areas in production planning and operative management of passenger train traffic in Norway and Sweden. The procurement shall contribute to replacing the current fragmented system landscape with a common, integrated system that supports end-to-end processes, improved information flow and more uniform work processes across Norway and Sweden. The scope includes: * The cloud service (the OneTrack system) with the accompanying infrastructure and computer resources. * Establishment of the system, including facilitation and implementation of the system. * Management of the system, including monitoring, support, training and compliance with the agreed service level. * A voluntary option connected to the functionality for planning buses for trains. * Any additional services offered through the Tenderer's Service Catalogue. See the tender documentation for more information.