Abstract-Nowadays, information Systems play effective role in the organizations in a way that they cannot be imagined without these systems. On the other hand knowledge value of organizations are increasing and they prefer to take care of this knowledge. Accordingly, having a knowledge management system that can handle this task is very important. Based on one of the successful models of information systems, management system includes such major factors each one focusing on a part of the system. Meanwhile cloud computing technology has created a revolution in software and hardware processing. So in this paper we try to evaluate the success rate of "Quality of Service" which is one of the major factors of management system based on cloud computing on a higher education system. Index Terms-Knowledge management systems, cloud computing, service quality.  I. INTRODUCTIONNowadays, the new technologies play a widespread role in the world. That is because of its ability to solve everyday problems of many people in addition to decreasing living expenses. As [1] mentions in his article, technology has managed to release IT based companies from exorbitant costs. One of these technologies is cloud computing which has been officially established since 2006. The improvement of this technology has been in such a way that [2] considers it as one of the most important concepts in information technology field. To define the cloud computing in a right way, the best definition is the one that United States National Standards Institute presents [3]: cloud computing is a safe and accurate framework to access different sources of network, such as servers, functional applications, etc. Which could be provided for the users so fast and with minimum costs and efforts.On the other hand [4] claims that the cloud computing and online social networks are suitable platforms to set up the knowledge management systems. Therefore, by expansion of knowledge based organizations, many different studies have been done on the knowledge management systems. According to [5]'s definition, knowledge management systems play a basic role in the system which is defined as: providing an intelligent backup of different users in the organization that play important roles in organizational knowledge graph. One of the most important benefits of these knowledge management systems is to cause the company to obtain a competitive advantage. Moreover, it can cause an increase in work and system quality and speed up the knowledge manufacturing cycle [6]. Therefore, knowledge management systems need a software platform to present their services to company employees for producing, modifying and maintaining of knowledge.In this article we are to investigate the uploading result of a knowledge management system using the cloud computing technology. The main question is whether this new knowledge management system can cause a proper result on the quality of services or not? In the next section we will take a short look at the history of the study, then we will hint the s...