Digital platforms, actually boosted by AI, permeate the urban fabric, operating not merely as technological mediators but as techno-political actors that re-shape and create the definitions of citizenship. Platform urbanization is an uncharted concept capturing how digital platforms and their infrastructures define the politics of urban realm on a planetary level. It is a process that produces a hybrid urban condition in which citizenship is enacted through material and immaterial interfaces and interactions that re-define participation, spaces, access, agency.

To grasp this transformation, this contribution introduces a threefold spatial typology of spaces characterising platform urbanization. Primary spaces (headquarters and regional hubs) represent nodes of strategic control, where digital economies, public and private spaces, and regulatory architectures converge. Secondary spaces (e.g. local centers, dark stores, sorting centres) manifest the logistical, political and economic entanglements through which everyday urban life is re-organized, revealing new labor regimes and spatial inequalities. Tertiary spaces (parcel lockers, informal rest areas, or temporary gathering points) materialise immediate negotiations of citizenship, where urban actors grip and re-signify platform infrastructures in daily practices.

By articulating these categories, we position citizenship as a spatial, political and relational process, embedded in the infrastructural and algorithmic logics of contemporary urbanization. Platform urbanization thus becomes a lens through which to examine how political subjectivities, rights, and collective claims are reconfigured within hybrid, digitally mediated urban environments that embody the novel techno-political arena, making it necessary to further inquire into the socio-spatial and political redefinition of urban-digital citizenship in the age of platform urbanisation.