Affiliate marketing is a promotional model that connects merchants with independent marketers who are willing to invest time and money to sell the merchant’s products.

Put another way, affiliate marketing connects a business that has a product to sell with a marketer who can sell it.

Affiliate marketing is performance based. Thus advertisers only pay when affiliates deliver a specified customer action. In the ecommerce context, this action is typically an online purchase, which makes affiliate marketing very cost effective.

Payments to Affiliates

The approach to affiliate payments just described is often called pay-per-sale. It is by far the most popular form of affiliate compensation. Some estimates suggest that more than 80 percent of affiliate programs are pay-per-sale.

Amazon has had a robust affiliate marketing program since 1996. It was one of the first such programs and is now among the world's largest.
Amazon has had a robust affiliate marketing program since 1996. It was one of the first such programs and is now among the world’s largest.

For example, Amazon, which operates one of the world’s largest ecommerce affiliate programs, pays affiliates a percentage of each “qualified sale.” The exact percentage varies, but according to the Amazon Associates website, affiliates can earn up to 10 percent.

The term “qualified sale” (or its synonym, “qualified purchase”) is important in the affiliate marketing context because the advertiser (the ecommerce merchant) defines in advance what constitutes a qualified sale. When an affiliate agrees to promote the merchant’s products, that affiliate is accepting the merchant’s definition of a “qualified sale.”

Given the mutual dependence on what “qualified sale” means (or “qualified purchase”), it is important for advertisers to carefully define how an affiliate will be paid. Returning to Amazon’s program, the company spells out which sales qualify for affiliate payments.

Here are examples of what might define a qualified purchase.

  • The customer clicks a specific affiliate link.
  • The product purchased must be added to the shopping cart during a single session following the aforementioned click.
  • The customer must pay for and receive the product purchased.