Glossary term
What is AZ (Availability Zone)?
AZ stands for Availability Zone.
An independent data centre (or group) within a region. Example: Running servers in 3 AZs survives one data-centre failure.
Learn it properly · System DesignLesson 57: Cloud Fundamentals: Regions, AZs & ServerlessServers that once took months to order now take minutes — but the cloud has its own concepts, failure modes and surprise bills. Regions and availability zones, IaaS to SaaS, serverless and cold starts, the shared responsibility model, cost, and infrastructure as code.