Existing and new services can potentially be shared among governmental organizations to achieve economies of scale and scope. In designing shared services in public administration various views need to be integrated in order to make well-sounded trade-offs. In this respect, it is often argued that there is insufficient support for structural reorientation and transformation of public organizations.The overall objective of this ongoing research is to support the planned change and transformation of public administration through the implementation and deployment of shared services. In this poster presentation we will demonstrate how flow-oriented, discrete-event simulation can be used to model and unravel shared services by capturing the organizational, business process, and application views. In this way simulation can support the diverse stakeholders that are involved in the structural reorientation of public administration. Moreover, we will show using case study how simulation can support decision-making and facilitate the making of trade-offs through what-if analyses.