A process model to portray the dynamics of Information Systems Development (ISD) is presented. The model, while primarily rooted in earlier process models, also incorporates two key contextual factors -- the perceived threat to users and the relative power of the users and the systems group -- from past factor studies. The model is then used to generate four scenarios across the ISD process. These are co-operative, user-dominated, MIS-dominate£4 and con/lict. The scenarios are illustrated with summaries from recent case studies in ISD. This indicates the effectiveness of the model. The paper concludes with suggestions for using the model to identify the relevant scenario and thereby improve the management of the ISD process.