64. Route 53 Geoproximity Routing Policy (Traffic Flow Only)
Geoproximity routing lets Route 53 to route traffic to your resources based on the geographic location of your users as well as your resources. Also you can optionally choose to route more traffic or less to a given resource by specifying a value known as bias. A bias expands or shrinks the size of the geographic region from which traffic is routed to a resource. To use geoproximity routing, you must use Route 53 traffic flow.