Résumé en anglais

A real-world multi-criteria decision aid (MCDA) application on software evaluation is presented in this paper. The decision process concerned a big Italian company faced with the management of a call for tenders for a very important software acquisition. The decision aiding process is extensively presented and discussed, mainly as far as its products are concerned, i.e. -the problem situation; -the problem formulation; -the evaluation model; -the final recommendation. The results of the experience are discussed using the comments of the client of the study