Pay per click
PPC (or Pay-Per-Click) is an online advertising model in which advertisers pay (the host website) each time a user clicks on one of their online ads but only when a user clicks on the ad, hence the name “pay per click.” Currently, one of the most common types of PPC is the paid search ad. These ads appear in response to online search using a search engine like Google or Bing. <br>Suppose you are hungry and you are feeling like pizza tonight. You would most likely open your browser and in your search engine type in the keywords "pizza near me" 
What is returned in your search results is often not just the best ranking website but also a paid ad (or two or three). These ads are generally differentiated from the search results by the word “Ad” or “Sponsored” in small print.