Azure Region
A set of datacenters deployed within a defined geographic area and connected by a low-latency network.
An Azure region is a geographic area containing one or more datacenters networked together with a low-latency connection. When deploying a resource, you choose a region, and that choice governs where data physically resides — critical for compliance with regulations like GDPR. For the exam, distinguish a region from an Availability Zone and a Region Pair. Availability Zones are physically separate datacenters within a single region, giving intra-region fault isolation. Region Pairs are two regions within the same geography that Microsoft designates for cross-region replication and prioritized recovery during outages. Not all regions support Availability Zones — a common exam trap.
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