Description: In competitive market conditions introduction and use of information technologies becomes a determinative of successful commercial-industrial activity. Thus it is important to define efficiency of use of information systems and their component. For this purpose it is necessary to allocate a set corresponding criteria, to apply adequate means and models of their comparison and the analysis. In particular, use of methods multicriteria estimations and the theory of fuzzy sets has been offered.
Keywords: multicriteria estimations, fuzzy sets theory, efficiency of information systems