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What is an availability zone (AZ)?

publish date: 2025/09/11 02:56:47.768043 UTC

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A physical facility that houses numerous AWS servers

A virtual division of AWS infrastructure designed to ensure fault tolerance

A firewall-like security group that controls access to AWS resources

A geographical region that covers more than one continent

Correct Answer

A virtual division of AWS infrastructure designed to ensure fault tolerance

Explanation

Availability Zones (AZs) give backup and reliability inside an AWS region. An AZ is made up of several data centers, but it’s not just one data center. Security groups manage who can access resources, but they don’t create zones of infrastructure. Regions are different from AZs, and no region stretches across multiple continents.

Reference

AWS Certified AI Practitioner (AIF-C01) Study Guide, Tom Taulli

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