It is increasingly more interesting to the Companies to understand the relationship existing between perceived importance and performance of information systems within their companies. The purpose of this paper is to explore the perception of the importance of attributes of information systems and whether the performance of information systems met the users’ expectations in Azam company in Dar es salaam. Anonymous and self-administered questionnaires were distributed to 217 respondents. A total of 185 usable responses were received, resulting in a response rate of 85.3% which was considered satisfactory for subsequent analysis. Using an end-user satisfaction survey, It was discovered that the end-users were moderately satisfied with the company’s IS performance and that there were gaps between importance and performance on all the systems-related attributes studied. The largest gap pertained to the attributes Understanding Systems and Documentation. The contribution of the study is in advancing Importance-Performance Analysis applicable to IS research.