cloud-engineering

Availability Zone

Definition

An availability zone (AZ) is a physically isolated data center or group of data centers within a cloud region that has independent power, cooling, and networking. Distributing resources across multiple AZs provides fault tolerance — an AZ failure doesn't take down all replicas.

AZs are the fundamental unit of high availability design in AWS, Azure, and GCP.

Related Terms

Region

Cloud Region

Multi-Region

Multi-Region Architecture

Disaster Recovery

Active-Active

Active-Active Architecture

← Back to Glossary

Ship secure code faster

Crash Override integrates security into the developer workflow. No context switching, no waiting on reviews.

Talk to a Human See the Product