Steinert, MichaelMichaelSteinertSchleimer, Anna MariaAnna MariaSchleimerAltendeitering, MarcelMarcelAltendeiteringHick, DavidDavidHick2025-05-052025-05-052025https://publica.fraunhofer.de/handle/publica/48724810.5220/00130935000038992-s2.0-105001823031enfalseData EcosystemData IntermediaryData SharingData SpaceData TrusteeDesigning Data Trustees: A Prototype in the Building Sectorconference paper