Scenario methods for viewpoint integration in e-business requirements engineering

Before it makes sense to embark upon e-commerce systems development, first the commercial and technical feasibility of an e-business idea must be established. To this end, we describe how needs and interests of various types of stakeholders can be expressed by different viewpoint models. We propose an extension of so-called use case maps (UCMs) to e-business requirements engineering, as a scenario method to achieve the necessary viewpoint integration. Furthermore, we show how this scenario method is employed in an iteratively progressing 'spiral' process of e-business requirements elicitation and analysis. Our approach is practically illustrated by an e-business case study in electronic advertising.