Impact is the more common of the two in our index: it runs on 238 websites against 93 for Amazon Associates, and 1 sites use both. Counts come from real scans, not vendor claims.
Amazon Associates is an affiliate marketing program that allows website owners and bloggers to create links and earn referral fees when customers click through and buy products from Amazon.
Impact helps businesses contract and pay partners.
1 site runs both Amazon Associates and Impact. That is 1% of the sites using Amazon Associates, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.