This paper seeks to highlight the role of IT resource as a source of sustained competitive advantage. The paper’s objective is to provide a fine grain examination of IT resource attributes and its role in building sustained competitive advantage. Utilizing the resource based view framework of VRIO, the paper presents the proposition that IT managerial skills contribute to building sustained competitive advantage; and that other IT resources such as switching cost, access to capital, proprietary technology and IT technical skills, though valuable, are inadequate to meet the criteria of VRIO based framework of sustained competitive advantage.