High-performance computing (HPC) is fundamental in a wide range of actions, from financial fraud detection to smart energy or manufacturing innovation. EU Member States need to increase their HPC competencies. The EU-funded EUROCC project will mobilise the necessary expertise to create a network of National Competence Centres in HPC across 33 EU and associated states. The project will provide an overview of the vast service portfolio tailored to the respective national needs of public administrations, academic communities and industry. EUROCC aims to strengthen the national competencies of HPC as well as high-performance data analytics and national AI capabilities to close existing gaps in the usability of these technologies.