Highly available multi-region web app - Azure Architecture Center

Learn how to run an Azure App Service application in multiple regions to achieve high availability, by following this example architecture.

Microsoft Azure Example - Multi-region Web App

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Reference Architecture: Citrix DaaS - Azure

Deploying multi-region high available web application in Azure with App Services, SQL Database, and Azure Front Door — Part 1, by Ajith Ramawickrama

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Multi-region N-tier application - Azure Architecture Center