The need for top management involvement in the exploitation of IT is a recurring theme of information management Previous research has suggested that this involvement is linked with a two way relationship between CEO and CIO. This paper reports on an exploratory research study which set out to identify the determinants of a successful two way relationship. CEOs and CIOs were interviewed in-depth in fourteen large organizations based in the UK. The paper describes an explanatory framework which links the quality of the CEO/CIO relationship to identify. attributes of each of the parties, and of their host organization.