The subject matter of the procurement procedure is the award of a service contract for the technical assistance of the evaluation of the pilot operation within FAIRway Danube based on a detailed evaluation concept made available by the Participating Contracting Authorities. The prolongation in time and additional tasks will be an optional part of the procurement. Altogether, the contract is planned to last until the end of FAIRway Danube which may be extended until end of 2021 at the latest.