Ad trafficking

Ad trafficking is the operational work of setting up a campaign in an ad server: creating the order and line items, adding targeting and schedules, uploading and checking creatives, and activating delivery.

Google Ad Manager's model is typical. An order holds the campaign's big-picture details, such as the advertiser and the person responsible, called the trafficker. The trafficker uploads creatives and manages the line items day to day (Google Ad Manager Help, accessed 9 November 2026). Line items carry the specifics: quantity or goal, targeting, dates, ad type and the creative sizes expected. By default Ad Manager activates a line item once a creative of each specified size is attached, though an admin can require manual activation instead.

Programmatic adds its own trafficking. For header bidding, ad ops create line items keyed to the price values that Prebid sends, so external bids can compete inside the ad server (Prebid.org, Introduction to Header Bidding). Deals need matching line items or deal settings too.

Most delivery problems start here: a size that does not match the ad unit, targeting that excludes everyone, or a click URL left on a test page.

Example: A trafficker sets up a four-week sponsorship: one order, two line items (desktop and mobile), three creatives and a frequency cap of three a day. A colleague checks the preview before activation and finds the mobile creative is 320x100 while the ad unit expects 320x50.

Related terms: ad server, programmatic guaranteed, frequency capping, creative wrapper, header bidding, deal ID.

Authoritative source: Google Ad Manager Help, "About orders and their settings" (accessed 9 November 2026).

Read the full guide: Ad ops explained: roles, trafficking, QA and tools.