Resiliency & High Availability Architecture

Azure Storage

Failover mecanism

Cloud-based Infrastructure like Azure Storage offers geo-redundancy options to ensure high availability and therefore, some Azure Regions offer a failover mecanism.

2 Options may be considered : Choose the Right Azure Region for You | Microsoft Azure

1. Deploy Azure Resources such as Azure Storage in a Region that does not support the FAILOVER mecanism : Canada East Region.

2. Deploy Azure Resources such as Azure Storage in a Region that supports the FAILOVER mecanism : Canada Central Region.

Backup mecanism

Cloud-based Infrastructure like Azure Backup Center provides a backup solution to protect ou Azure Blob in Azure Storage Account : Overview of Azure Blobs backup - Azure Backup | Microsoft Learn . The backup could be configured as a continous backup or a periodic backup and be based a Policy (retention, schedule and rules of execution). And, the execution would be triggered from a Backup Vault which has access and the right permissions related to Azure Strorage.

Azure Web App & Azure AI Search

Backup mecanism of Azure Web App

There are two types of backups in App Service. Automatic backups made for your app regularly as long as it's in a supported pricing tier. Custom backups require initial configuration, and can be made on-demand or on a schedule : Back up an app - Azure App Service | Microsoft Learn

Backup mecanism of Azure AI Search

Backing up and restoring an Azure AI Search index involves copying an index from one service to another, and in the process, creating JSON files on your computer with the index schema and documents1. This is particularly useful when you want to move your index to a higher tier for production use or if you want to back up your index to your computer and restore the index at a later time1 : Back up and restore an Azure AI Search index - Code Samples | Microsoft Learn