The utilization of information technology (IT) throughout the organization’s value chain underlies many prescriptionsforthestrategicuseofIT. Inthisstudy,weexaminethediffusionofcomputerizationacross organizations’ business activities using a process approach. Contrasting expectations of the pattern of computerization of business activities over time are developed from traditional diffusion studies and from a body of work comprising more recent empirical studies of innovation adoption, learning theory, and economic theory. Process analysis of a sample of 215 organizations was conducted arid the results prompted a further exploratory maIysis to determine if there were process differences between high and low performing organizations.