As a retargeting company, we can only show ads to the people who were shopping on our advertisers’ websites. This means that we only buy a percentage of the inventory you send to our platform – however, the more users we recognize as shoppers, the more inventory we will monetize.
That’s because the Criteo engine evaluates the conversion possibility of each impression before making a purchase. Our engines evaluate each impression at a granular level down to the individual shopper and their previous shopping patterns.
To help us identify all high quality users, you need to give Criteo’s tag priority within your ad server. This enables us to access, find and buy the right impression at the right price for our advertisers.