The Task Area (Meta)Data Interoperability (TA-MDI) provides the technical backbone of NFDI-MatWerk. Its mission is to build a scalable and interoperable infrastructure ecosystem that connects distributed services, workflows, and tools—ensuring that they can be integrated and used across research groups, institutions, and domains. Formerly referred to as the "Digital Materials Environment (DME)," this ecosystem now evolves into a federated architecture supported by common standards, interfaces, and concepts.

A central element is the implementation of the Fair Digital Object (FDO) concept, which serves as the basic interoperability layer within NFDI-MatWerk and links to both semantic infrastructures and workflow environments. TA-MDI not only ensures technical integration, but also facilitates adoption through outreach, onboarding, and training activities for researchers and local IT providers.