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Understanding the role of spatial data infrastructure (SDI) in the society is important to acceptance of the concept and its alignment with spatial industry objectives. Much has been done to describe and understand the components and operation of different aspects of SDIs and their integration into the spatial data community. However, what is often miss-understood is that the role SDI plays is by necessity greater than the sum of individual components of SDI and stakeholder groups. SDI is fundamentally about facilitation and coordination of the exchange and sharing of spatial data between stakeholders in the spatial data community. To this end, the authors propose that the roles of SDI have been pursued through two different approaches: product- and process-based. Both approaches have value, but contribute to the evolution, uptake and utilization of the SDI concept in different ways. They provide different …