The Cambridge Service for Data-Driven Discovery (CSD3), operated by the University of Cambridge Research Computing Services, is a leading high-performance computing platform that provides large-scale computational and data analysis capabilities for data-intensive research. Through IRIS, CSD3 supports scientific communities requiring substantial CPU and GPU resources for simulation, machine learning, data processing and advanced scientific analysis. The service combines powerful computing systems with high-performance storage and data-management infrastructure, enabling researchers to process large datasets efficiently and undertake complex computational workloads. CSD3 supports a broad portfolio of IRIS science activities and complements Cambridge’s Arcus Cloud platform, providing the scalable computing resources needed to accelerate discovery across astronomy, space science, artificial intelligence and other data-intensive research domains.