Search engine ads are paid advertisements that appear on search engine results pages, such as those from Google or Bing. These ads are typically displayed at the top or bottom of the page when users search for specific keywords. Advertisers bid on these keywords to ensure their ads are shown to potential customers. When users click on these ads, the advertisers pay a fee, often referred to as pay-per-click (PPC). This advertising model allows businesses to reach targeted audiences effectively, driving traffic to their websites and increasing the chances of sales or conversions.