IRIS provides access to a diverse portfolio of computing and data services that support research across a wide range of scientific disciplines. These services include high-throughput computing, high-performance computing, cloud and virtualised resources, advanced GPU platforms, large-scale data storage systems and specialist facilities designed to meet the needs of particular research communities. Together, they enable researchers to process complex simulations, analyse large datasets, support artificial intelligence and machine learning workloads, and manage valuable scientific data throughout its lifecycle. Delivered through a federation of infrastructure providers, these services give researchers access to capabilities ranging from specialist community resources to nationally significant facilities, ensuring that the UK research community can undertake data-intensive science at scale.