The European High-Performance Computing Joint Undertaking (EuroHPC JU) is a public-private partnership in High Performance Computing (HPC), enabling the pooling of European Union–level resources with the resources of participating EU Member States and participating associated states of the Horizon Europe and Digital Europe programmes, as well as private stakeholders. The Joint Undertaking has the twin stated aims of developing a pan-European supercomputing infrastructure, and supporting research and innovation activities. Located in Luxembourg City, Luxembourg, the Joint Undertaking started operating in November 2018 under the control of the European Commission and became autonomous in 2020. History In June 2016, EU Member State leaders, meeting in the European Council called for greater coordination of EU efforts on high-performance computing as part of the EU's wider Digital Single Market strategy. The European Declaration on High-Performance Computing was launched in Rome in March 2017, initially signed by seven EU Member States (France, Germany, Italy, Luxembourg, the Netherlands, Portugal and Spain) committed to upgrading European computing power. In June 2018, the Council of the EU endorsed the European Commission’s proposal to establish the EuroHPC Joint Undertaking. On 3 July 2018, the European Parliament voted in favour of the Commission’s proposal to create a European High Performance Computing Joint Undertaking. The proposal was formally adopted by the Council of the European Union on 28 September 2018. The Executive Director was appointed on 15 May 2020 and the Joint Undertaking became autonomous from the European Commission on 23 September 2020. The EuroHPC Joint Undertaking was reviewed by means of Council Regulation (EU) 2021/1173. Funding and objectives The EuroHPC Joint Undertaking is jointly funded by its members with a budget of around €7 billion for the period 2021-2027. Most of this funding comes from the current EU long-term budget, the Multiannual Financial Framework (MFF 2021-2027) with a contribution of €3 billion, distributed as follows: €1,9 billion from the Digital Europe Programme (DEP) to support the acquisition, deployment, upgrading and operation of the infrastructures, the federation of supercomputing services, and the widening of HPC usage and skills; €900 million from Horizon Europe (H-E) to support research and innovation activities for developing a world-class, competitive and innovative supercomputing ecosystem across Europe; €200 million from Connecting Europe Facility (CEF-2) to improve the interconnection of HPC, quantum computing, and data resources, as well as the interconnection with the Union’s common European data spaces and secure cloud infrastructures. The EU contribution is matched