Amazon PPC is pay-per-click advertising on the Amazon platform that helps sellers promote products by placing them in front of interested shoppers. Each time a potential buyer clicks on an ad, the seller pays Amazon a cost per click, which is a key factor in determining the overall cost-effectiveness of a campaign. This guide covers all three ad types, Sponsored Products, Sponsored Brands, and Sponsored Display, alongside the core metrics needed to evaluate performance, seven practical optimization techniques, and a glossary of 20 essential Amazon PPC terms. It is written for both new sellers getting started and experienced advertisers looking to improve campaign efficiency.