Pay Per Click, commonly known as PPC, refers to a model of internet marketing in which advertisers pay a fee each time one of their ads is clicked. Pay-per-click is calculated by dividing the advertising cost by the number of clicks generated by an advertisement. The basic formula is −
Pay-per-click ($) = Advertising cost ($) ÷ Ads clicked (#)
Essentially, PPC is a way of buying visits to your site, rather than attempting to earn visits organically.