Abstract:
Evaluating information systems success considered to be critical for organizational success. However; there is no distinct way to conduct such evaluation, because; the most used theories and models depends on two different approaches, mainly; behavioral theories, and information based theories, therefore, the evaluation process remains fuzzy and elusive. This study aims to review information systems success theories and models; in order to compare and evaluate those theories and models, for the purpose of integrating the results with the perevious studies in this area, and to find out a unified model for evaluating information systems success. To achieve these objectives, the current study reviews literature related to information systems success theories and models, where the most used theories and models are the theory of reasoned action, theory of planned behavior, technology acceptance model, Delone and Mclean model (D&M), Seddon Model. After that a comparison between the testing resutls found in the literature were conducted to find out the most suitable theory. The main finding of this study supports the Delone and Meleans Model (D&M), where this model can be consedered to be the most practical model, because it provides a framework that can facilitate information systems evalustion process. Furthermore; this model subdevides the measurements into six main groups; mainly system quality, information quality, service quality, use, user satisfaction, and net benefits. In addition, this model takes into consideration the requirements of all parties that uses information systems in the organization.
