Amazon Associates is the more common of the two in our index: it runs on 92 websites against 5 for eBay Partner Network. 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.
eBay Partner Network is an online referral program where eBay pays commissions to referrers on sales generated by customers they’ve referred.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.