Pay-per-click advertising, also known as PPC advertising, is a form of online marketing where advertisers pay a fee each time their ad is clicked. This type of advertising allows businesses to display their ads on search engines, social media platforms, and other websites, and only pay for the clicks they receive. It is a cost-effective way to drive targeted traffic to a website and increase brand visibility. With PPC advertising, advertisers can set a budget and target specific keywords and demographics, making it a highly targeted and measurable form of advertising.