Which Azure concept supports regulatory requirements for physical data isolation within a region?

Azure Regions are geographically distinct datacenters that provide high availability and disaster recovery within a specific geographic area. They are designed to meet regulatory requirements for data residency and compliance, ensuring data remains within a defined geopolitical boundary. This physical isolation is crucial for organizations with strict data governance policies. Availability Zones offer high availability within a single Azure Region by providing physically separate locations with independent power, cooling, and networking. While they enhance resilience, they do not provide the same level of geopolitical data isolation as distinct regions. Azure Data Lake is a scalable data storage and analytics service, not a concept for physical isolation. Resource Locks prevent accidental deletion or modification of resources but do not address data residency or physical isolation.