Conclusion
In this study, by taking support from RBT and IT capability theories, we have developed a theoretical model that looks at the direct impact of IT capabilities (that is taking in third order with sub-constructs IT management, IT infrastructure and IT personnel) on firm performance and the mediating effects of the ISMS on this relationship. Like many other authors, such as Huang et al. (2009), we confirm that there is a positive relationship between IT capabilities and the performance of a firm. However, it is not enough to explain the whole firm performance. In fact, intermediation of ISMS is relevant to completely predict the firm performance. Our study also highlights the importance of the context (e.g. Africa) for theory testing. The results of this study provide strategies to enhance the use of IT capabilities with the objective of better firm performance. Also, managers are informed that ISMS is a critical resource to enhance firm performance. Finally, this study points to a better use of ISMS and RBT model in future research on firm performance.
