- Insertion Order (IO)
- A signed authorization from an advertiser to a publisher specifying the ad placements, quantities, dates, and prices for a specific campaign.
- CPM (Cost Per Mille)
- The price an advertiser pays for one thousand ad impressions — a standard billing unit for display advertising.
- CPC (Cost Per Click)
- A pricing model where the advertiser pays only when a user clicks on the ad, regardless of how many times it was shown.
- CPA (Cost Per Acquisition)
- A performance pricing model where the advertiser pays only when a click results in a defined conversion — a purchase, sign-up, or download.
- Ad Creative
- The visual and copy assets — banners, videos, copy, and landing page URLs — supplied by the advertiser for placement by the publisher.
- Impression
- A single instance of an ad being displayed to a user, regardless of whether the user interacts with it.
- Click-Through Rate (CTR)
- The percentage of impressions that result in a click, calculated as clicks divided by impressions multiplied by 100.
- Above the Fold
- A placement position visible on screen without scrolling — commands a premium price because it receives higher viewability and engagement.
- Ad Server
- Technology that stores, selects, and delivers ad creatives to web pages and tracks impression and click data in real time.
- Make-Good
- Additional ad inventory or credit provided by the publisher to compensate the advertiser when a campaign underdelivers against contracted impressions or placements.
- Viewability
- A measurement standard — typically 50% of pixels visible for at least one second for display, two seconds for video — used to confirm an ad had a reasonable opportunity to be seen.
- Flight Dates
- The defined start and end dates of an advertising campaign, outside of which the contracted placements do not run.