Google's main advertising product, offers pay-per-click (PPC) advertising, cost-per-thousand (CPM) advertising, and site-targeted advertising for text, banner, and rich-media ads.

Adwords allows Advertisers to manages placement of ads into Google's search results, Gmail, YouTube Videos and into Web pages and Mobile apps of publishers participating in Google's Display Network. The placement is managed via a real-time auction. Advertisers running performance campaigns are only charged when users click on an ad.