Microsoft Azure — UK West Region (Cardiff, Wales)

Microsoft Azure UK West — the Cardiff, Wales region — launched in 2016 as the disaster-recovery and data-residency pair to Azure UK South (London). The Wales region ensures UK data residency compliance for enterprise and government customers requiring geographic redundancy within the UK.

UK West hosts Azure AI services in a paired failover configuration with UK South, supporting Azure OpenAI Service, Copilot, and AI inference workloads for customers with strict UK data residency requirements under UK GDPR and the UK AI regulatory framework. Public sector customers include Welsh Government, NHS Wales, and UK central government departments.

As part of Microsoft's £2.5 billion UK AI investment announced in May 2024 — the largest in the company's UK history — UK West is part of the expanded AI infrastructure footprint supporting the growth of Azure OpenAI capacity for UK enterprise and sovereign customers. The Cardiff region benefits from Wales's access to offshore wind energy, supporting Microsoft's commitment to operating on 100% renewable energy.

The facility complements the NVIDIA Cambridge-1 supercomputer in Cambridge and the growing UK AI research corridor from London to Edinburgh. Microsoft's Welsh operations also contribute to the Welsh Government's ambition to develop a national AI strategy and attract hyperscaler investment to Wales.