Microsoft Certified: Azure Administrator AssociateImplement and manage virtual networkingMedium
An organization is deploying a geo-distributed application across multiple Azure regions. The application requires high availability and low latency for users worldwide. You need to ensure that user requests are routed to the closest healthy endpoint. Which Azure service is best suited for this requirement?
- AAzure Load Balancer
- BAzure Front Door
- CAzure Application Gateway
- DAzure Traffic Manager
Show answer & explanationAnswer & explanation
Correct answer: B. Azure Front Door
Azure Front Door is a global, scalable entry point that uses the Microsoft global edge network. It provides application acceleration, SSL offloading, WAF capabilities, and most importantly, intelligent routing based on latency and health probes to the closest healthy backend, which is ideal for geo-distributed applications.
Why the other options are wrong
- A. Azure Load Balancer is a regional Layer 4 load balancer, distributing traffic within a single Azure region, not across multiple regions globally.
- C. Azure Application Gateway is a regional Layer 7 load balancer, not designed for global traffic distribution or routing to the closest endpoint across regions.
- D. Azure Traffic Manager is a DNS-based global traffic load balancer. While it can route to the closest endpoint, it works at the DNS level and doesn't offer the same application acceleration or WAF capabilities as Front Door, and its failover can be slower due to DNS propagation.
Azure Front Door
A global, scalable entry point that uses the Microsoft global edge network to create fast, secure, and widely scalable web applications, providing application acceleration, WAF, and intelligent global routing.
- Operates at Layer 7 (HTTP/HTTPS).
- Provides global traffic management and failover.
- Offers dynamic site acceleration (DSA) and SSL offloading.
Memory trick: Front Door: Your global welcome mat, fast and smart.