How can a single integrated platform transform the way cities plan their future, manage risks, and monitor critical infrastructure? This session answers that question through two real-world implementations at scale: Roma Capitale and the Campania Region. The presentation introduces usBIM.geotwin, the open-standard platform from ACCA that bridges the gap between GIS and BIM — enabling public administrations to build, query, and act upon living Geospatial Digital Twins of their territory. Rather than treating geospatial data and building information as separate silos, the platform fuses them into a unified, actionable environment where urban planners, risk managers, and infrastructure engineers can work from the same source of truth. The Roma Capitale case study explores how geospatial digital twin technology is being applied to support urban planning decisions across one of Europe's most complex metropolitan areas — integrating heterogeneous data layers (cadastral, environmental, mobility, utilities) into a coherent territorial model that supports both strategic planning and day-to-day operational needs. The Campania case study shifts the focus to infrastructure safety: specifically, the monitoring and management of bridges and road infrastructure across the region. The session demonstrates how GIS-BIM integration enables continuous structural awareness, anomaly detection workflows, and evidence-based maintenance prioritization — moving infrastructure management from reactive to proactive. Across both cases, the session emphasizes a central thesis: this is not a bespoke solution built for two exceptional clients. The architecture, workflows, and integration patterns demonstrated here are designed to be replicated by any public administration — regardless of size or technical capacity — that needs to move toward data-driven territorial governance. Attendees will leave with a clear understanding of what a production-ready Geospatial Digital Twin looks like in practice, what integration challenges arise when combining GIS and BIM at city and regional scale, and how the methodology can be adapted to their own institutional context.

Most organizations working at the intersection of BIM and GIS face the same structural problem: their data lives in multiple Common Data Environments — sometimes different CDEs across different departments, projects, or stakeholders — and no single platform speaks all of them fluently. This session addresses that problem head-on. The presentation demonstrates how usBIM.geotwin, acca's cloud-based GIS platform, connects natively with any major CDE — including ACCA, Autodesk, Bentley, Dassault, and Trimble — to extract openBIM® models in IFC format and integrate them directly into an ESRI ArcGIS environment. The result is a vendor-neutral, open-standard workflow that eliminates the need to choose between BIM platforms: organizations can keep working in the CDE they already use, while feeding a shared Geospatial Digital Twin with consistent, interoperable data. The session then explores what becomes possible once that integration is in place. usBIM.geotwin imposes no practical limits on the scale of what can be managed: from individual structures to regional infrastructure networks, from dozens of assets to thousands, from city districts to full smart city deployments. Multiple IFC models from different sources and different CDEs can be combined into a single unified geospatial environment, queried together, and updated independently — without rebuilding the underlying data architecture. A dedicated section addresses point cloud integration: how raw scan data can be ingested into the platform, segmented into meaningful components, enriched with structured attributes, and published on the GIS alongside traditional BIM models. This opens the door to accurate digital twinning of existing assets — infrastructure, heritage buildings, urban environments — where IFC models may not yet exist or may not be the primary data source. Taken together, these three capabilities — CDE interoperability, unlimited scalability, and point cloud support — define a new baseline for what a production-ready Geospatial Digital Twin platform should be able to do. Attendees will leave with a concrete understanding of the integration workflow, the technical architecture that makes it possible, and the practical implications for organizations managing large, heterogeneous asset portfolios across extended territories.