PPC stands for pay-per-click advertising where advertisers pay each time an ad is clicked. It allows advertisers to buy website visits rather than earning them organically. PPC campaigns involve advertisers creating ads, bidding on keywords, ads displaying in auctions when keywords are searched, and advertisers only paying for clicks. Major PPC platforms are Google Ads and Bing Ads. PPC offers precision targeting of audiences, measurable results through analytics, and flexibility to adjust campaigns quickly based on performance data. Success requires strategic planning, optimization, and understanding the target audience.