When you see an ad on a web page, behind the scenes an ad network has just automatically conducted an auction to decide which advertiser won the right to present their ad to you. Eric Zeng, CC BY ...

Next year, PayPal also intends to let these advertisers purchase ads across the more than 30 million merchants that use its payment systems, opening up a much broader commerce-media ad network.

Why Every Company Is an Ad Company Now Facebook and Google are having a harder time reaching customers, so companies like Marriott are creating their own niche ad networks—and revenue streams.

The Ad Lab experiment created an advertising network for independent media. Here’s what we learned “Of the 16 publishers who participated, four will receive checks of $1,000 or more. The average was ...

Marriott has begun selling ads on its websites, mobile app, guest room TVs, marketing emails, and Wi-Fi sign-in pages, plus social media.