AZ493477 - Generally Available: New Availability Zone Features for Azure App Service

Azure Updates

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Last Updated

May 21, 2025

Published May 20, 2025

Status

Launched

Timeline

  • May 2025
    General Availability

Product

App Service

Tag

Microsoft Build
Features

Category

Compute
Mobile
Web

Description

Enhanced Availability Zone support for Azure App Service is now generally available. This update simplifies the pre-requisites to enable zone resilience, reduces the cost of running in high availability, and enhances reliability and resilience for your apps. 

Key Updates

  • Reduced minimum instance requirement for enabling Availability Zones from three to two, while still maintaining a 99.99% SLA.
  • Some App Service plans with two or more instances may be able to automatically support Availability Zones without additional setup.
  • The zone redundant setting for App Service plans and App Service Environment v3 is now mutable throughout the life of the resources.
  • Enhanced dashboard for visibility into Availability Zone information, including physical zone placement and zone counts.
  • Eliminates minimum instance fee for App Service Environment v3.