E-commerce is among functions which have been promoted by modern communication technologies. The progressive trend of e-commerce has created new opportunities in the field of trade and commerce. Taking advantage of this method of trading in national and international levels require providing infrastructures without which e-commerce will be hindered and conducting commercial transactions will not be fully possible.

The present article aims to do pathology on e-commerce with an approach to information technology in Knauf Iran Company. At first, researches which have been carried out in Iran and other countries were studied and different criteria and indices of e-commerce were drawn. Then, a conceptual pattern was developed after categorizing the criteria. Thereafter, effects of indices on each other were assessed to prioritize effects of elements on e-commerce and finally results were analyzed using the DEMATEL technique. The institutional-organizational management index was placed in the highest priority and the expert and educated manpower index was placed in the lowest priority.