Affiliate marketing: An advertising system based on the CPA (Cost Per Action) payment method, where websites display advertisers’ banners for free but receive payment when registrations or sales result from click throughs. In its purest form, affiliate marketing simply describes the use of one website to drive traffic to another.
The primary incentive behind affiliate marketing is to reward with payments based on how many people are driven back to the advertiser’s website. Affiliates are generally allowed to utilize whatever methods they wish to drive traffic from their website to the advertiser’s website. Affiliate marketing can include all forms of SEO and PPC advertising, as well as various other forms of advertising.