The outsourcing of services related to Information Technology and Information Systems (IT/IS) is seen by many organizations as a tool for achieving strategic objectives. Reducing costs, focusing on core capabilities and improving business/process performance are held to be the main reasons for investing in IT/IS outsourcing. However, the process of outsourcing is complex and involves considering not only the benefits but also evaluating investments and the risks inherent in making decisions during this process. When planning to outsource these services, companies are faced with a choice of different projects, suppliers and contract settings. Reaching appropriate decisions is crucial to achieving the desired goals, and the consequent success of investments. This research in progress paper presents a model for assessing and prioritizing different IT/IS outsourcing projects. This model uses the methodology of Data Envelopment Analysis (DEA) and allows consideration to be given not only to the intrinsic aspects of such projects (cost, schedule, benefits, customization, etc.), but also the characteristics of the proponent company. Therefore, the proposed model aims to assist companies in evaluating different projects for outsourcing operations related to IT/IS.