CPC (Cost per Click) is a method of calculating the price of advertising on the website. The price per click is set and according to number of clicks and their price, the advertiser pays. The advertiser therefore pays only for actual clicks on his site. Pricing by CPC is used in PPC business models.
Use of the CPC in practice: Abbreviation CPC is used by advertising systems to indicate how much the advertiser pays per click - either a fixed amount or the price automatically adjusts the auctions - that is, by what is the interest on the word or click. Advertising systems usually allow you to set the maximum CPC (max CPC).