An innovative, multi-layered façade system ensures long-term, low-maintenance use. To offer the customer a maintenance service that is optimised and target-oriented, the conditions of the glass elements are continuously monitored. The ac-quisition of temperature, humidity and air pressure values also enables weather data to be recorded in detail for facility management. The shared use of measurement data by users, operators, product manufacturers and consultants is a typical use case for the development and management of a collaborative digital twin. This use case allows the development of the fundamental platform features (hardware con-nectivity, rights management, data safety and security), the integration of specific algorithmic analysis and the implementation of AR technologies (visualisation using a 3D model, remote access for maintenance support). The hardware infrastructure required will be implemented based on existing technologies.