Geo targeting

Geo targeting gives one published address several destinations and picks between them by where the visitor appears to be. One printed link then serves the German shop, the American shop and everyone else, and a campaign that runs in four markets needs one address instead of four.

The location comes from the visitor's address range, resolved against a commercial database — not from GPS, and not from the language of the browser. That distinction sets the accuracy you can expect: country is dependable, region is usually right, city is a range with a radius attached rather than a place a person is standing. A traveller, a corporate network or a VPN will all resolve somewhere other than home.

So build the rules to fail safely. Always keep a default destination for the visitors whose country cannot be determined, because an unanswerable condition must never count as a match. And prefer offering a switch on the destination page over hard-blocking a market — a visitor sent to the wrong storefront with no way out simply leaves.