86Second, Article 53(1)(a) of Directive 2004/18 requires that the award criteria be linked to the subject-matter of the contract. In that regard, recital 46 in the preamble lays down, in its third paragraph, that ‘the determination of these criteria depends on the object of the contract since they must allow the level of performance offered by each tender to be assessed in the light of the object of the contract, as defined in the technical specifications, and the value for money of each tender to be measured’, the ‘most economically advantageous tender’ being ‘[that] which … offers the best value for money’.