GEOmedia interviews the managers of 3 Italian regional Spatial Data Infrastructures: Basilicata, Lazio and Lombardia. The questions concern main datasets published by the SDI, the relationship with users, the services and advanced tools provided (for visualization, analysis and simulations) the pro-spects for integration with data from non-public sources and crowdsourced data.... Two interviews with the same structure, relating to regional SDIs of Piemonte and Veneto, were published in the previous issue 5/2021.