Affiliation on the Internet is a marketing technique that allows an advertiser (affiliator) website to promote its products or services by offering remuneration to other publisher websites (affiliates) in exchange for a contribution of sales, registrations or traffic.
In other words, affiliation is the banner ad that is right above. It's all the commercial links (direct or banners) that make you buy.
They have a tracking code that identifies the origin of each customer on a merchant site, that is to say, which site it comes from. So to thank me for bringing business, the merchant will give me back a commission (which varies depending on the affiliate programs), or pay me at the click rate on banners for example or the number of displays . The affiliation was invented by Amazon, which is still the leader in this market and also one of the most developed in terms of technology.
The affiliation has existed for many years (since 1996 to be exact and 1999 in France) but has really been developing for 4 or 5 years. It is a market that brings a lot of money, both to the merchant sites and business introducers. Thus we have seen developing in recent years sites specialized in the affiliation and in the retrocession of commissions: sites Cashback. These sites offer hundreds of affiliate links and, for example, pay back 50% of the commissions they receive to their clients. Thus they really earn only 50% of the commissions but in front of such a success, these sites generate a lot of money.
The great interest of affiliation lies in the fact that the relationships that link merchant sites and partner sites are win-win. Everyone finds his account: the merchant site sells more (even if it means a smaller margin) and the partner site boosts and makes its site profitable.