The globalization process and technological advances from the massive use of internet has brought the need for competitive mechanisms in order to be adressed by the deregulated marketing scenario. The generation of competitive advantage is essential to organizations positioning which are facing the challenge of adapting to the new world order. In this context of emerging technology as a cornerstone of knowledge management business, corporate portals now have vital importance in the model of the modern organization. This dissertation analyzes the subject, comparing the various settings available in the current academic literature and nuances of practical applicability, as its challenges, business models, desirable architecture and possible results. The center of the analysis will give focus to guide the use of portals with reference to the corporate acqusitions processes, illustrating the main characteristics of this type of tool based on a case study in a brazilian energy company, in addressing the motivating adoption factors on the basis of technological and business contexts, history of the deployment process and the changes resulting from adaptation to the technologic model. The study was based on the experience of the author by the proximity to the company and the qualitative insights gathered with executives from top management and employees of this corporation. Finally, as a synthesis of the study are offered insights into the real situation in sustained academic reference, as a further proposal for the analysis of lessons learned, opportunities to gain and future vision into the decision among the choices for the procurement corporate portals.