With the ever-increasing volume of spatially referenced urban data, it is becomingmore and more difficult to sort through the sheer mass of available information. Inorder to make data easily identifiable and searchable, public institutions havedeveloped the concept of a Spatial Data Infrastructure (SDI). SDIs are based on toolsfor storing, cataloging and disseminating and respect the norms and standards in force.It is now possible for users to "consume» data and to be informed as to their validity,terms of use, etc. In this context, the IRSTV is implementing its own SDI to provide atool for storing and sharing among its researchers scientific knowledge producedaround the city.The purpose of this poster is to show how the different components of the IRSTV'sSDI are linked together and to highlight what still needs to be done. Indeed, we showthat it is not currently possible to broadcast mapping content in a harmonized way.Similarly, we address the problem of processing remote tasks on a server. Weemphasize current developments in the CartoPOLIS and OrbisGIS platforms whichpromise to resolve these deficiencies.