The importance of organizational Purchases can be explained partly by the high impact of the costs involved. Strategic Purchasing of activities has been evident in organizations, regardless of size and nature of business. This importance made a deep study of the product categories and vendor market, resulting in addition of process improvement, standardization of items of the same product to different units of a business arise; the selection and qualification of suppliers; assess the performance of contractors and suppliers of materials; negotiation between the parties in a contract; and monitoring of inventory levels for planning future acquisitions. In this dissertation, we discuss management of categories of purchases from the critical analysis of the categories of purchases items of information and communication technology (ICT) in an oil company. This study is relevant because of the importance of the topic that generates challenges and opportunities to formalize, organize and standardize the processes of supply management in the ICT area of the company. To do so, the items of ICT area portfolio were classified according to Kraljic Matrix (1983), according to the vision of their own area of ICT staff and the areas responsible for managing the macro process supplying goods and services and management of contracts. Thus, the factors were identified along the supply chain that contributes to the divergence between the areas of classification. Thus, it was made validation analysis dimensions: cost reduction of supply, improving the level of service, reduces the risk of supply interruption and prioritization of materials and products chain. This validation tried to check adherence of the model used the premises established by the company. In conclusion, we propose necessary changes in classification and recommendations regarding procedures and sourcing strategies to be adopted by the ICT area.