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In order to ensure that technology supports business needs and that IT investments deliver the desired value, it is fundamental to define an Information System Architecture (ISA) and measure its accurateness to the business model and existing technologies. Thus, in this paper we are concern on evaluating ISA by measuring its qualities (relevant at enterprise level).

Since software architecture (SA) is part of the information system architecture and the evaluation topic is a quite mature issue on the software engineering domain, we enumerate and classify several software evaluation approaches in order to consider its applicability to ISA evaluation. Therefore, in this paper, we present and classify the most significant software evaluation issues, namely: software qualities, software evaluation approaches, and software metrics.