A video platform serves viewers on several continents. It must send each request to the closest healthy backend, terminate TLS at the edge, and fail over within seconds when a region becomes unhealthy. Which service fits?
Show answer and explanation
Answer: C
Azure Front Door is a global HTTP and HTTPS entry point that runs on Microsoft's edge network. It routes each request to the lowest-latency healthy origin, terminates TLS at the edge, and fails over quickly when health probes detect a problem. Load Balancer and Application Gateway are regional services and cannot route across continents. Traffic Manager works at the DNS layer, so it does not terminate TLS or proxy traffic.
Why the other options are wrong
- A. Azure Load Balancer distributes traffic across VMs inside one region. It is a regional Layer 4 service with no global routing and no TLS termination.
- B. Application Gateway terminates TLS and offers a WAF, but it runs in one region. It cannot send viewers to the nearest healthy region on another continent.
- D. Traffic Manager returns DNS answers that steer clients toward healthy endpoints. Clients then connect directly, so it does not terminate TLS or cache content at the edge.