The Passage Platform combines spatial data processing, real-time visualization, and multi-user collaboration to provide seamless and interoperable access to complex GIS, CAD, BIM, and IoT data for a broad user base – within an open, interface-based architecture. Passage is characterized by its intuitive operation, open data integration, and a clear focus on productive applications. The platform is fully independent of third-party providers and can be operated as both a cloud-based (SaaS) and an on premise system. Its visualization is powered by a game engine, enabling high-performance, crossplatform real-time rendering – from traditional 2D maps (via OGC services) and interactive 3D models to AR/XR applications and multi-user scenarios.