Proposal of Quality in Use in Software Quality

Both product quality and quality in use which are positioned in software quality model deal with "usability" for users. The former, usability is positioned as one of product quality. The latter, usability is dealt with outcome of use by using product, system and service as quality. Especially, it is necessary for quality in use to consider influence on not only users when interact directly but also wider stakeholders. For this, it is important to prepare a model to realize making a product which usable for users and which effective for almost stakeholders by using the product. In this paper, we cluster four target user groups, they are, "operator of system and/or software", "organization which has responsibility for system and/or software management", "customer using system and/or software" and "Society which exists system and/or software". According to these clustering, we propose four models about quality in use correspond to target users.