Nowadays, with the expansion of Internet, tools have been built to help vendors to set up Web stores, building the store databases and managing the order processing and payment transactions. These tools typically do not focus on issues like the personalization of the interaction with the customers. But, using of these tools commonly has a barriers and challenges especially in implementation. In this article we are identifying the important challenges and barrier of e-commerce implementation in Iran. So, we prioritized those challenges to finding the most important challenges among them. Finally we suggest many courses of action to solving those barriers and challenges. For this goal, we use AHP method to challenges prioritization. Since many of our data are qualitative and such data might be ambiguous, we transform the qualitative terms into quantitative terms by using the fuzzy collections. Then we use Fuzzy AHP (FAHP).
