Latency Routing Policy

Allows to route traffic based on the lowest network latency for your end user (i.e, which region will give the fasted response time).

Latency Resource Record Set

To use the latency-based routing, you create a latency resource record set for the EC2 (or ELB) resource in each region that hosts your website.

When Route 53 receives a query for your site, it selects the latency resource record set for the region that gives the user the lowest latency.