PPC, or Pay-Per-Click, is a digital advertising model where advertisers pay a fee each time their ad is clicked. Commonly used on search engines and social media platforms, PPC allows businesses to bid for ad placement in sponsored results or feeds. This approach helps drive targeted traffic to websites, as ads are shown to users actively searching for related products or services. PPC campaigns can be closely monitored and adjusted in real time, making them a flexible and cost-effective option for online marketing.