Legacy systems still have a lot of importance for corporations and users. The challenge of how to modernize them is widely explored, whether by completely rewriting the system or replacing the underlying technologies. ad hoc attempts to modernize systems can be chaotic and costly. Many articles have been looking for ways to face this challenge, but we have not found satisfactory studies that propose a way to maintain functionalities and build a new interface design and better user experience by transforming static systems into intelligent systems. This dissertation proposes an approach to face this challenge, bring recommendations and turn legacy systems into intelligent systems with low cost and low effort, maintaining the main functionalities of the legacy system, through analysis of logs of use, questionnaires and interviews with users, we identify difficulties, system weaknesses, usage behavior and new opportunities for improvement.