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Although the idea that geographical concentration is essential to the process of innovation is generally taken for granted, the link is not clearly established and the relationships between communication, location and the innovation process need deeper analysis. This article attempts to do so by addressing the “dynamics of proximity,” in other words the question of coordination between those concerned. Firstly, we identify the role of proximity between all those involved in the innovation process. We then propose a typology of the different territorial configurations of innovation, taking the dynamics of proximity into account.