Question

A retail company runs a customer-facing web application on Azure App Service (Premium v3) in the East US region. During a recent regional outage, the application was completely unavailable for several hours. The architect must redesign the solution so that the application remains available if an entire Azure region fails, while distributing user traffic to the closest healthy region for the lowest latency and automatic failover. Which design should the architect recommend?

Accepted Answer

Deploy the App Service to a second paired region and use Azure Front Door with health probes to route traffic across both active regional deployments.

Answer

Enable zone redundancy for the existing App Service plan in East US and scale out to additional instances.

Answer

Deploy the App Service to a second region and use Azure Traffic Manager in priority routing mode with the second region as a passive standby.

Answer

Configure Azure Site Recovery to replicate the App Service instances to a secondary region and fail over during an outage.