High Availability for Azure Application Gateway Without Traffic Manager

Question

How can I achieve high availability for my Azure Application Gateway without using Traffic Manager and without rebuilding resources in another region?

PS - Based on common issues that we have seen from customers and other sources, we are posting these questions to help the Azure community.

Answer 1

To ensure high availability for your Azure Application Gateway, you do not necessarily need to use Azure Traffic Manager. The Azure Application Gateway itself supports multiple zones and regions, offering built-in high availability and resilience features.

Azure Application Gateway's multi-zone redundancy allows it to withstand the failure of an entire Azure zone, ensuring your application remains available. This built-in feature means that unless you are preparing for regional failover, you may not need Azure Traffic Manager.

For those preparing for regional failover, Traffic Manager can be combined with Application Gateway. Traffic Manager routes user requests to the most appropriate service endpoint based on DNS-level routing, which is effective for zone/regional failover solutions.

For more detailed information and step-by-step guidance on configuring high availability and scalability for your Azure Application Gateway, please refer to the official Azure documentation.

Resources:

• Azure Application Gateway FAQ
• Azure Traffic Manager Documentation

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