You can use the Ad Exchange glossary to learn more about frequently used terms or features. Press Ctrl

Contains one or more ads that target placements (websites or subsets of websites) or categories. You set a bid, or price, to be used when your ad is triggered by the targeting criteria in the ad group. You may also set prices for individual placements within the ad group.

An ad impression is reported whenever an individual ad is displayed on your website. Different ad formats will display varying numbers of ads, and can therefore result in a different number of impressions. In addition, keep in mind that the number of ads in any ad unit may vary depending on whether the ad unit is displaying standard text ads, expan [..]

The tools used in the creation of ads, such as ad servers, research technologies, and remarketing.

The estimated traffic to your site, as generated by your ad.

Google offers several different options for the varieties of ad that may appear on your pages and in your reports. You may see:

Setting that allows you to exclude placements that may appear in a lower section of a webpage (where the user needs to scroll down to view the content).

A request sent by Google to the buyer application that describes an impression being auctioned.

A response sent by the buyer application to Google that describes the bid and includes an HTML snippet for the associated creative.

Campaigns are used to give structure to the products or services you want to advertise. The ads in a given campaign share the same daily budget, language and location targeting, and end dates.