Buyer Groups
BuyersWhy Groups Exist
A buyer group is a container that applies shared configuration to multiple buyers at once. Groups are used when a set of buyers share a routing priority, caps, conversion in one place for multiple buyers.
Group Tier and Weight Override the Buyer's Own
When a buyer belongs to a group, the group's tier and weight override the buyer's tier and weight during routing. This is a deliberate inheritance model: configuring priority at the group level is more maintainable than configuring it per buyer. If you want a buyer within a group to deviate in priority, you must remove it from the group or put it in a different group.
Tier, Weight, and Routing
The offer's router walks buyers in order of tier (ascending), then weight (descending) within a tier. A lower tier number means higher priority. Weight is used to distribute load among buyers of the same tier: a buyer with weight 3 gets roughly three calls for every one call a weight-1 buyer gets in the same tier.