PPC refers to the pay-per-click, an online advertising model classified and controlled by several search engines. It's also referred to as CPC - cost per click. Small and medium-sized businesses are now competing with large corporations because of this digital model.PPC services are classified as inorganic in the context of digital marketing. Advertisers can place their ads above or below the search engine results on search engines like Google, Bing, and others. Search engines are paid every time viewers click on those ads.