Business intelligence, as a decision support tool in many organisations, has offered the ability to gather, store, access and analyse huge amounts of data so that better decisions can be made regarding customers, suppliers, employees, logistics and infrastructure. Prior empirical studies of business intelligence and decision support applications (BIDSA) focus on technological and operational aspects and there is very little research to consider managerial and strategic factors. The factors that affect the adoption of BIDSA have, however, not yet been fully investigated. Differences in the use of information technology (IT) have been distinguished in different countries and so it is necessary to conduct a comprehensive study about the facilitating and inhibiting factors in the adoption and diffusion of BIDSA in Australia. The aim of this study was thus to fill the gap by investigating factors affecting the successful adoption of BIDSA in Australian ERP user organisations by applying Rogers’ theory of Diffusion of Innovations (DOI), and to develop a conceptual model for the successful adoption of BIDSA