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A company is deploying a new web application to Azure App Service. The application is stateless and needs to be highly available across multiple geographical regions to minimize latency for global users and ensure business continuity in case of a regional outage. Which Azure service should be used in conjunction with Azure App Service to achieve global distribution and traffic routing capabilities?
- AAzure Firewall
- BAzure Traffic Manager
- CAzure Load Balancer
- DAzure Application Gateway
Show answer & explanationAnswer & explanation
Correct answer: B. Azure Traffic Manager
Azure Traffic Manager is a DNS-based traffic load balancer that allows you to distribute traffic to your public-facing applications across global Azure regions. It is ideal for scenarios requiring global distribution, high availability, and reduced latency by directing users to the closest healthy endpoint.
Why the other options are wrong
- A. Azure Firewall is a managed cloud-based network security service that protects your Azure Virtual Network resources, not for traffic routing.
- C. Azure Load Balancer operates at the transport layer (Layer 4) and performs load balancing within a single Azure region or VNet.
- D. Azure Application Gateway operates at the application layer (Layer 7) and provides advanced routing and WAF capabilities, typically within a single region.
Azure Traffic Manager
Azure Traffic Manager is a DNS-based traffic load balancer that distributes incoming traffic across multiple global Azure regions to improve application responsiveness and availability.
- DNS-based, operates at the global level.
- Distributes traffic to endpoints in different regions.
- Supports various routing methods (e.g., Performance, Priority, Geographic).
- Ensures high availability and business continuity.
Memory trick: Traffic Manager: 'T'raffic 'M'oves 'G'lobally.