The growing diversity of Digital Humanities (DH) infrastructures and research practices increases the need for shared conceptual frameworks that enable interoperability and sustainable knowledge exchange across institutions and national contexts. This paper focuses on current efforts to further develop and implement the Taxonomy of Digital Research Activities in the Humanities (TaDiRAH) as a common vocabulary for describing digital research workflows.

Recent integrations of TaDiRAH within the German data competence centers HERMES and SODa demonstrate its practical value for structuring services such as resource and expertise databases, hubs, and community platforms. These implementations also served as a catalyst for critically reassessing the taxonomy itself. Practical use revealed ambiguities, missing concepts, and structural inconsistencies, leading to renewed community discussion on revision and governance.

A workshop held in May 2025 initiated concrete steps toward improving the taxonomy, including proposals for clearer hierarchical notation, alignment of definitions with external authority data, expansion of explanatory examples, and improvements to the public GitHub workflow to support community contributions. A new working group has since been established to coordinate sustainable revision processes, versioning practices, and multilingual updates, including revisions of existing translations and preparation of new language versions.

The paper discusses how these current activities aim to strengthen TaDiRAH as a community-driven infrastructure component supporting FAIR-aligned documentation and interoperability across DH projects. It also addresses challenges arising from overlapping research activities and differing disciplinary interpretations, arguing for a balance between conceptual precision and practical usability.

By presenting ongoing development efforts and inviting broader community participation, the contribution positions TaDiRAH as an evolving framework that connects local practices with international infrastructures and supports the continued growth of a collaborative, interoperable DH landscape.