Short for pay per click, PPC is an Internet marketing formula used to price online advertisements. In PPC programs the online advertisers will pay Internet Publishers the agreed upon PPC rate when an ad is clicked on, regardless if a sale is made or not.
With pay per click in search engine advertising, the advertiser would typically bid on a keyword so the PPC rate changes. On single website — or network of content websites — the site publisher would usually set a fixed pay per click rate. Also called cost-per-click (CPC).