Ad-tech
Publisher
The site running the ad widget — never displayed by mediabuyer.
Publisher is the site that runs a network's ad widget — e.g. Bloomberg.com, USA Today, Yahoo, regional newspapers. mediabuyer indexes ad creatives, not publisher placements: showing 'this Taboola ad ran on Bloomberg' is not useful to operators (Taboola decides where ads run, advertisers don't pick publishers individually) and surfaces sensitive widget IDs. We never render publisher in the UI.
Example
Premium publisher widget on Bloomberg.com shows 6 Taboola tiles — the operator never directly bid on Bloomberg; Taboola allocated the impressions based on the campaign's audience signal.