CC BY 4.0Schmidt, CarlosCarlosSchmidtVolz, FriedrichFriedrichVolzStojanovic, LjiljanaLjiljanaStojanovicKett, Holger JoachimHolger JoachimKett2025-11-182025-11-182025https://publica.fraunhofer.de/handle/publica/499453https://doi.org/10.24406/publica-645010.3390/app15211162310.24406/publica-6450Digital twins (DTs) based on the Asset Administration Shell (AAS) enable interoperable representations of industrial assets, while dataspaces like those defined by the International Data Spaces (IDS) facilitate sovereign, policy-governed data exchange across organizations. However, integrating AAS-based DTs into dataspaces remains challenging due to manual processes, synchronization issues, and varying implementation strategies. This paper addresses these gaps by first presenting a structured analysis of existing integration approaches and evaluating the user requirements to be met. We then introduce a flexible reference implementation extending the Eclipse Dataspace Connector (EDC), which automates AAS registration into dataspaces. Finally, we conduct a qualitative comparison with state-of-the-art prototypes from initiatives such as Catena-X and Factory-X and demonstrate the application of our integration approach in the MODAI project for sensor-driven manufacturing data sharing. Results indicate that the integration approach reduced manual effort and provides synchronization between digital twins and dataspace.endataspacedigital twinAsset Administration Shell (AAS)Industry 4.0journal article