Programs

AdSense

Main article: AdSense

AdSense enables text or image advertisements to be displayed on Web sites that want ads to help raise money. The ads are administered by Google and generate revenue on a per-click basis. Google utilizes its search technology to serve ads based on Web site content, the user's geographical location, and other factors. Those wanting to advertise with Google's targeted ad system may sign up through AdWords.

AdWords

Main article: AdWords

AdWords is a service that allows advertiser's ads to appear on any Google search page, Gmail email or AdSense page if certain keywords are displayed using a self-service system. The AdWords service is Google's largest source of income. The advertiser pays Google per click and there is a bidding system to determine ad ordering.