Collecting, measuring and analyzing data about web applications users has become a reality. The objectives and goals are different, and among the "peaceful" ones are controlling and optimizing websites for gaining maximum profits, products promotion according consumer interests etc. Two of the most popular search engines Google and Yandex, offers its users specialized tools: Google Analytics and Yandex.Metrica. They allow the accumulation of data about the website users, such as geographic location, preferences and interests, behavior etc. These data can be used to optimize the website, but at the moment, there are no modules or tools that could automate the process of decision making, which is the SEO (Search Engine Optimization) manager task. In the paper will be studied the possibilities of fuzzy logic to automate the decision making process in order to free and release the manager of routine activities in some such situations.