Azure Cloud

Servers: Individual Machines

Data Centers: These are the physical buildings that house servers and other components like networking, storage, and compute resources

Availability Zones: Each Availability Zone comprises one or more data centers. Availability Zones are tolerant to data center failures through redundancy and logical isolation of services.

Regions: Regions are typically located in different geographic areas and can be selected to keep data and applications close to users.

Paired Regions: Paired regions support certain types of multi-region deployment approaches.

Paired regions are physically separated by at least 300 miles, reducing the likelihood that a natural disaster or large-scale infrastructure failure would affect both regions.

Geo-Redundant Storage: Data replicated with GRS will be stored in the primary region and replicated in the secondary paired region.

Site Recovery: Azure Site Recovery services enable failover to the paired region in the event of a major outage.

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