FAIR-IMPACT is a Coordination and Support Action of the Horizon Europe EOSC roadmap, from June 2022 to June 2024.It focuses on the application of FAIR principles to different research objects (datasets, software, semantic artefacts, mappings, etc.) and the transfer/expansion of FAIR solutions between communities. The project workplace includes persistent identifiers, semantics, FAIRness assessment methods and interoperability. In particular, WP4 on ontologies and metadata lays the baseline for the use of semantic artefacts (ontologies, vocabularies, thesaurus, etc.) in EOSC.