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Announcing the General Availability of New Availability Zone Features for Azure App Service

jordanselig's avatar
jordanselig
Icon for Microsoft rankMicrosoft
May 17, 2025

We are excited to announce the General Availability (GA) of the new Availability Zone features for Azure App Service. This update brings enhanced reliability and resilience to your applications, increased cost efficiency, and simplified management of your App Service deployments.

What are Availability Zones?  Availability Zones, or zone redundancy, refers to the deployment of applications across multiple availability zones within an Azure region. Each availability zone cons...
Updated May 21, 2025
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SamCurryCurry's avatar
SamCurryCurry
Copper Contributor
Jul 31, 2025

Hi jordanselig​,

Similar to others on this thread, I can report that we were using Zone Redundancy with 2 instances, and Zone Redundancy was a mutable setting (could be switched off), but the feature seems to have been rolled back, with zero info from (the very opaque black box of) Microsoft on what is going on.

I have tried to get some concrete info via support channels, but the only person replying is a "Volunteer Moderator" who seems to confirm our experience but cannot quote any concrete authoritive details on exactly what is going on.

https://learn.microsoft.com/en-au/answers/questions/5495756/last-week-we-had-zone-redundant-app-services-with

Could you please let us know why suddenly these changes appear to have been rolled back with no official updates, and provide some concrete info that we can use to plan against?

Thankyou. 

jordanselig's avatar
jordanselig
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Aug 04, 2025

Apologies for the delay, we are investigating this issue. 2 instances should be supported and there are no plans to go back to the 3-instance requirement. I will follow up when I have more information.

  • SamCurryCurry's avatar
    SamCurryCurry
    Copper Contributor
    Aug 12, 2025

    Hi Jordan,

    It's been 7 days since your message. Do you have any information on the situation?

    Thanks.

    • jordanselig's avatar
      jordanselig
      Icon for Microsoft rankMicrosoft
      Aug 12, 2025

      Thank you for the patience here. The issue should be resolved as of yesterday. Please try again and let us know if any issues.