The company participating in this work sought to implement activities related to software maintenance due to problems related to the great occurrence of defects, constant rework, among others. To suppress these problems, a preliminary study of the system in question has been elaborated, evaluating the current state of software maintenance. In view of the diagnosis, the necessity of changes became evident concerning the way that the system maintenance activities were conducted. With this, the search for alternatives of improvements began with the objective of reducing the occurrence of defects and also increase the maintainability of the system. Knowing the problems and what could be done to improve; it was proposed to accede some practices of the software maintenance maturity model - SMmm and to integrate the concepts of these practices into a defined process and adapted to the needs of the system. To support this implementation, the infrastructure used was the Team Foundation Service - TFS platform that collaborated with the implementation of the selected practices according to the requirements of the SMmm model, resulting in a defined process supported by the TFS that partially implements the SMmm model. This paper presents a case study with the objective of evaluating the benefits provided by the use of some practices of the SMmm model. The evaluation carried out compared the data from the preliminary study with data collected after adoption of the practices, the analyzed results pointed out a significant reduction in the number of issues.