First-Click Attribution in affiliate marketing is a type of attribution model used to track and reward affiliates who lead to a sale. This model assigns all credit for a sale to the first affiliate that attracted a customer to a website. This model is beneficial for both the merchant and the affiliate because it rewards the initial efforts of an affiliate, and the merchant does not have to pay multiple affiliates for a single sale. An example scenario for First-Click Attribution in affiliate marketing would be as follows. A potential customer clicks on a banner ad from an affiliate website, which takes them to the merchant's website. The customer then browses around the site, comparing different products and prices before eventually making a purchase. In this scenario, all of the credit for the sale would be attributed to the affiliate that placed the initial banner ad, regardless of any other affiliate links that were clicked before the purchase.