Latency-based routing in Amazon Route 53 is designed to route users to the Region that provides the lowest network latency, based on Amazon’s measurements of latency between AWS Regions and users’ networks. For applications deployed in multiple Regions, this provides the highest performance experience for global users.

Therefore, creating an A record with a latency routing policy is the correct choice.

Geolocation (Option B) routes based on user location, which may not always correspond to the lowest latency.

Failover (Option C) is for active-passive architectures, not performance optimization.

Geoproximity (Option D) is more complex and focused on directing traffic based on geographic bias rather than measured latency.