  Interoperability is a long-standing challenge slowing down the digitalization
of mobility systems and the provision of full mobility-as-a-service offerings.
This paper presents early results achieved by the SPRINT project (Semantics for
PerfoRmant and scalable INteroperability of multimodal Transport), an integral
part of the Shift2Rail IP4 work programme, in meeting the challenge. It
introduces the conceptual architecture and describes the demonstrator
implementation of the Interoperability Framework (IF), a solution designed to
support servitization in the mobility domain in two directions: From the Travel
Application perspective, the IF provides semantically-consistent abstractions
of distributed ICT resources offered by Service Provider Companies, insulating
them from the "mechanics" of operating remotely over networks and across
multiple communication protocols and/or data formats; from the Service Provider
Companies perspective, the IF allows leveraging their native ICT computing
environment and resources as elements of an end-to-end integrated intermodal
mobility solution, insulating them from the specifics of the customer front-end
applications.
