Various companies have implemented IT governance frameworks to improve their management and governance of IT. The benefits and areas of focus of IT governance have been only explored in theory. In this research an international survey of 113 firms using CobiT was conducted to understand the impact on the IT governance focus areas as companies increase their adoption of CobiT. Results indicate that companies which have achieved higher implementation levels experienced high positive impacts on all of the areas of IT governance, particularly in the later stages of implementation. Furthermore, the research maps out the IT governance areas which are most likely to display improvements at different levels of maturity.