GeoDNS
An authoritative DNS feature that returns different answers based on the geographic location or network of the querying resolver, used for global load balancing and regional routing.
GeoDNS returns different A/AAAA answers to the same query depending on where the request appears to come from, usually based on the resolver's IP (or its EDNS Client Subnet hint when available). A user in Frankfurt querying `app.example.com` gets the EU PoP IP; a user in São Paulo gets the South America PoP. Providers like Route 53 (geolocation/geoproximity), NS1, and Cloudflare Load Balancing implement it with policies for failover, weighted splits, and proximity rules. GeoDNS is less precise than anycast (it operates at resolver granularity, not packet path), but it is the standard way to do region-aware routing without owning physical network presence.