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App Service plan Zone-redundant and Load Balance

John Wong Yek Hon 270 Reputation points
2024-11-22T08:10:00.7733333+00:00

With Azure App Service deployed with zone-redundant enabled, does all the 3 instances run together with load balance? Or only 1 instance is running while the other 2 instances are just serve as backup and will be idle so long the 1st instance is still working fine?

Azure App Service
Azure App Service

Azure App Service is a service used to create and deploy scalable, mission-critical web apps.

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  1. Deepanshu katara 18,145 Reputation points MVP Volunteer Moderator
    2024-11-22T08:17:39.7466667+00:00

    Hello John , Welcome to MS Q&A

    In a zone-redundant Azure App Service deployment, all instances run together and are load balanced. The minimum instance count for a zone-redundant App Service plan is three, and if you specify a capacity larger than three, the instances are spread evenly across the available zones. This means that all instances are active and can handle traffic simultaneously, rather than having only one instance running while the others serve as backups.

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    Deepanshu

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