Case: Geo-routing one bio link lifted commissions 23%

Case: Geo-routing one bio link lifted commissions 23%
A tech reviewer sent all traffic to a US affiliate link. 34% of his audience was EU/UK and bounced at checkout (no shipping / wrong store).

We replaced the single link with a routing layer:

Phase 1 — Map
— Pulled audience geo: US 51%, UK 18%, DE 9%, rest 22%

Phase 2 — Build
— One smart link, rules: US to US program, UK to UK program, EU to .de store, else to global program

Phase 3 — Track
— Same utm_campaign across all, utm_content = geo tag

Result after 45 days: EU/UK conversion rate went from 0.4% to 2.1%. Total commissions up 23% with zero new traffic.

Definition of done:
— Every region has a valid destination
— Fallback rule exists for "unknown"
— Geo captured in utm_content