AdSense是Google公司面向网站站长的广告服务。

AdSense for content会自动检索目标网页的内容，然后放送与目标对象和网站内容相关的广告（站长也可以选择文本或图片广告）；Google声称，系统会媒合出最适当的广告，让读者确实发现这些广告是有用的。

AdSense for search让网站发布者为访客提供Google网页和网站搜索功能，并借由在搜索结果网页放送Google广告来获取收益。

Google AdSense is a program run by Google that allows publishers in the Google Network of content sites to serve automatic text, image, video, or interactive media advertisements, that are targeted to site content and audience. These advertisements are administered, sorted, and maintained by Google. They can generate revenue on either a per-click or per-impression basis. Google beta-tested a cost-per-action service, but discontinued it in October 2008 in favor of a DoubleClick offering (also owned by Google). In Q1 2014, Google earned US $3.4 billion ($13.6 billion annualized), or 22% of total revenue, through Google AdSense. AdSense is a participant in the AdChoices program, so AdSense ads typically include the triangle-shaped AdChoices icon. This program also operates on HTTP cookies.