Affiliate Marketing is an online marketing medium where special software is used. The one doing the marketing is called the Affiliate (or Publisher) and the one paying for the marketing is called the Merchant (or Advertiser). Earn With Affiliate and CPA Marketing.
Using a special affiliate software HTTP links are generated unique to each affiliate. So once you sign up as an affiliate, you get your own unique link. You use this link to do affiliate marketing (which is to direct traffic to the merchant’s website).
When any of this online traffic converts to a lead or sale, you automatically get credit for it and earn a pre-fixed amount (% of sale, fixed amount per lead, etc.)