The worldwide omnipresence and significant impact of digital products on a substantial number of complex variables of business community and everyday life by no means render the software development projects less risky endeavour. Starting from the significance of the behavioural dimension of software products for corporate purposes, based substantially on the research conducted by Cooper and Reimann, this article adopts a theoretical aspect in considering the relation between the implementation model, represented model and mental models of business software, as well as in overcoming the gap between research and design.