Geo-optimization for affiliates adresses a specific issue for affiliates with an international audience. For maximizing conversion rates and ecpm for international traffic, a publisher must - if possible - redirect each foreign visitor to a merchant corresponding to his location.
The redirect to the good national program is made automatically according to the visitor’s IP address.
Geo-optimization services and tools can be offered by some big affiliate networks, by automated monetization services or by dedicated services or scripts.
An example of impact of geo-optimization for affiliate revenues according to VigLink:
How a dedicated service (GeoRiot) charges for geo-optimization: