The management of technology within the organization is critical in taking full advantage of the benefits provided by the technology. In order to achieve the greatest return on information technology (IT) investment, the diffusion process of IT within the organization should be examined carefully. This paper aims to explore users’ behavior in the exploitation of IT, regarding different stages of the managerial decision making process in different business functional areas, and by means of different tools. For attaining this purpose, a survey has been applied on 30 employees in a large manufacturing company which is about to transfer its operations to a complex ERP system.