Affiliate marketing is a type of performance-based marketing in which a business rewards one or more affiliates for each visitor or customer brought by the affiliate's own marketing efforts.[1][2][3][4][5]

Affiliate marketing may overlap with other Internet marketing methods, including organic search engine optimization (SEO), paid search engine marketing (PPC – Pay Per Click), e-mail marketing, content marketing, and display advertising.[citation needed]

Affiliate marketing is frequently overlooked by advertisers.[6] While search engines, e-mail, and web site syndication capture much of the attention of online retailers, affiliate marketing carries a much lower profile. Still, affiliates continue to play a significant role in e-retailers' marketing strategies.[citation needed]