The WG KPIs aims to identify appropriate performance indicators for measuring the success of the Austrian EOSC initiative for stakeholders at different levels, i.e. the individual scientists, the institutions, and the policy targets (e.g. internationalisation, innovation, SDGs). The model of the WG KPIs will provide key performance indicators of the EOSC Support Office itself as well as Austrian institutions contributing to the EOSC. Our model will complement the indicators defined by the EOSC Association. The WG will also develop and adapt suitable methods (e.g. percentages of FAIR data, surveys, or social network analyses).