Question

A financial services company runs an identical API stack in us-east-1 and eu-west-1, each fronted by a Network Load Balancer. They use AWS Global Accelerator with both NLBs registered as endpoints across two endpoint groups (one per Region). During a planned maintenance window for the eu-west-1 stack, the network team must gracefully remove that Region from receiving new traffic without deregistering endpoints or changing DNS, while allowing existing connections to complete. Which Global Accelerator configuration change accomplishes this MOST effectively?

Accepted Answer

Set the traffic dial for the eu-west-1 endpoint group to 0 percent so new flows are steered to the us-east-1 endpoint group.

Answer

Lower the endpoint weight of the eu-west-1 NLB to 0 within its endpoint group while leaving the traffic dial at 100 percent.

Answer

Remove the eu-west-1 static anycast IP address from the accelerator so clients only resolve the us-east-1 address.

Answer

Change the accelerator's routing to latency-based so all clients are directed to the closer us-east-1 endpoint group.