Definition:

A platform that connects advertisers with publishers to display ads on websites or mobile apps

Example:

An example of an Ad Network is Google AdSense. It connects advertisers with website publishers to display relevant ads on their websites. Advertisers bid on ad placements, and the Ad Network uses an auction system to display the most relevant ads on a publisher’s website, based on factors like the website content, audience demographics, and bidding amount. When users click on the ads, both the publisher and the Ad Network earn revenue.