Information Technology has responded to the crisis by change and innovation. Competitive organizations are permanently prepared to identify the cutting-edge technologies which will change the future in business by using the concept of Business Intelligence. Information Technology is developing rapidly and providing decision makers with large amounts of information that require processing and analysis. Business Intelligence are critical decisions support applications, their role being to provide to management, based on information from the company, a landscape of its situation at some time, but also predictions on the medium and long term. This paper describes the architecture of the Business Intelligence Platform and highlights the benefits of using decision support systems for business applications. Nowadays, company executives require relevant and accurate business information in real-time to take strategic decisions. It is also essential to have freedom to access this information anywhere and anytime. There is a real need to extend this functionality beyond the office and on the fingertips of the decision makers. After a presentation of the concept of Data mining with examples from a case study, the paper focuses on the potential of the IT&C decisional sector, which embeds simulation and assistance tools for managerial decisions. Developing new methods for predictive modelling and application of existing techniques in many areas will be a permanent concern for both researchers and companies that are interested to gain competitive advantages.