This report articulates the value and impact of the Research Data Alliance Groups and their Outputs on the European Open Science landscape and particularly the European Open Science Cloud (EOSC) ecosystem. The analysis demonstrates the alignment of RDA outputs with key strategic priorities in Europe and the significant potential for leveraging the RDA platform towards harmonising efforts across the region. This is accomplished by mapping RDA outputs and Group activities to the EOSC Strategic Research and Innovation Agenda (SRIA), Horizon Europe projects, European Research Infrastructures, and European Union member states’ National Open Science policies. The RDA TIGER project is highlighted as a valuable initiative towards focusing and amplifying the work of the global RDA community to address European challenges, facilitating cross-fertilisation between European and international initiatives and being a force multiplier of the impact of RDA in the region. 

Version not accepted by the European Commission at the time of submission to Zenodo