CPC (Cost Per Click) is a digital advertising model where advertisers pay a fee each time a user clicks on their ad. This method is commonly used in online platforms like Google Ads and Facebook Ads, allowing businesses to drive traffic to their websites. The cost can vary based on factors such as competition, keywords, and the ad's quality. Advertisers often set a budget for their campaigns, and the total cost depends on the number of clicks received. CPC is an effective way for businesses to measure the success of their advertising efforts, as it directly correlates spending with user engagement.