Pay-per-click (PPC), also known as cost-per-click, is an internet advertising model that drives traffic to websites by having advertisers pay the publisher (usually a website owner) each time a user clicks on their ad. Essentially, it is the cost associated with getting an advertisement clicked.
For search engines, advertisers typically compete by bidding on keyword phrases relevant to their target audience. In contrast, content sites often charge a fixed price per click instead of employing a bidding system. PPC "display" ads, also referred to as "banner" ads, are displayed on websites or search engine results pages that have agreed to show ads related to their content.
When a visitor clicks on a relevant keyword or enters a search term, a list of relevant advertiser links appears. Users can then click on an advertiser link or related keyword, or conduct a new search. As the domain owner, you earn a fee from the network every time a user clicks on an advertiser link and visits their page.