Header Bidding Explained

The header bidding process works as follows:
- A visitor clicks on a website, and the page loads in their browser
- The short string of JavaScript in the website’s header, the header bidding wrapper, calls several ad networks
- Each ad network places a bid on the inventory
- The highest bid wins the auction
- The winning bid is passed to the publisher’s ad server
- The publisher’s ad server connects the user to the advertiser’s server
- The winning ad creative is displayed to the user
This entire process happens within milliseconds! You can see why it is sometimes called “pre-bidding,” as the auction is relocated from the ad server onto the header of the publisher’s webpage.