Processo de avaliação de sistemas legados

Abstract

Information systems are one of the main assets within an organization. However, as the company begins to use its systems, the demand for new needs of users or any applicable law, it is inevitable. Over time, these maintenance become difficult and costly and the system becomes legacy for the company. As the costs of maintaining legacy systems are high, it is necessary to evaluate each system to decide what will be done it. However, through literature searches, has not found a guide or manual evaluation of legacy systems to the manager that you want to get information for making the best decision on your system. Due to the difficulty of finding information indicating a legacy system must be assessed, the objective of this work is to propose an evaluation process of legacy systems to help decide on the most appropriate strategy for system evolution. To that end the legacy system must be assessed along two dimensions: the value of business and technical quality of your system. The business dimension evaluates whether the company really needs the system. Have the technical dimension, rate the quality of software, both from the application, as the environment he is deployed. The result of the evaluation of the system in the size of business and technical imply the strategy suitable for the evolution of the evaluated system, which can be: discard, maintain the system, some form of re-engineering or replacement. The process was applied in a cooperative, identifying one of the systems as a legacy. This system had a higher business value and a high technical quality according to the criteria of the process, and continue to hold the system was the result of the most appropriate strategy for the evolution of this system. The process was assessed according to its efficiency, and the company's point of view is efficient.