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AWS Services · Concept

Region

An AWS Region is a geographic area where AWS services run. SDK clients use a configured Region to send requests to the matching service endpoint.

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Syntax

region = us-west-2
export AWS_REGION=us-west-2
setx AWS_REGION us-west-2

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  • Availability Zones
  • Local Zones
  • service endpoints
  • cross-Region replication
  • AWS_DEFAULT_REGION

Source: AWS Region - AWS SDKs and Tools. Checked 2026-11-03.