Nowadays, organizations which aim to be competitive in a more concurrent market, tend to group together into virtual organizations (VO). Designing the information system (IS) of such a VO on the basis of the IS of those participating arises methodological and technical problems. Particularly, the formal identification and representation of requirements which has been researched to a large extent for a single organization, is not adequate for a VO. Indeed, the IS of a VO plays an important role in the collaboration and the cooperation of the participants organizations to achieve a common goal. We propose at an intentional level, criteria allowing virtual organizations to be identified and classified, as well as simple graphical and textual models to design the virtual organization's IS. Our work includes a partial transformation proposal from the intentional models to basic business process models at the organizational level.
