This paper presents a new model of strategic IT decision-making processes based on reviews of the management and strategic IT decision-making literature. Strategic IT decisions are important and infrequent IT-related decisions made by the top leaders of an organization that have, or potentially have, a major impact on organizational health and survival. It is argued that if the decision-making processes behind strategic IT decisions are better understood, it may be possible to make better decisions, reduce cost overruns, and/or explain why some major IT-related projects have struggled to realize expected benefits.