Cost-per-click, or CPC, is a pricing model used in paid advertising where the advertisers pay for each click made on their ads. CPC allows businesses to track their ad expenses and measure the return on investment. Cost-per-click is a cost-effective advertising model because advertisers have to pay only for specific actions (such as clicks) and not for views. Google Ads is one of the largest online advertising platforms that follows the cost-per-click model.