The purpose of the current research was to identify and prioritize the effective factors on measuring the success of the alignment of business and information and communication technology. During this research, the factors were obtained according to internal and external studies and in four dimensions of common understanding between information technology and business. and work, the capability of information technology department, information technology architecture and information technology governance were categorized. In this research, the proposed method called Fuzzy DEMATEL was implemented in order to identify and prioritize factors affecting the success of business alignment and information and communication technology. The findings showed that in the dimension of common understanding between information technology and business, the factor of senior management's knowledge of information technology is the most effective and the factor of communication between information technology managers and managers of other departments is the most impressible factor. In the dimension of the capability of the information technology department, the information technology efficiency factor is the most effective and the information technology responsiveness factor is the most impressible factor. In the dimension of information technology architecture understanding, the presence of integrated macro architecture in the organization is the most effective factor and the information technology infrastructure flexibility factor is the most impressible factor, and finally in In terms of information technology governance, the existence of information technology strategic planning has been the most effective factor and the budget control factor has been the most impressible factor.