Join us Dec. 1-3 in New Orleans for the Digiday Programmatic Marketing Summit
The definitive Digiday guide to what’s in and out at Dmexco 2018
Digiday covers the annual trade show in Cologne. More from the series →
There’s nowhere better than the annual Dmexco conference, which kicks off Sept. 12 in Cologne, Germany, to take the temperature of the digital marketing industry.
Marketers, publishers, (albeit fewer) agencies, and ad tech vendors, will descend on the city to figure out how to make their digital ad supply chains more efficient, address the General Data Protection Regulation, and get caught up on emerging tech.
Much has changed in the last year. Here’s a list of what’s in and what’s out this year.

More in Media
How Forbes is using ChatGPT referral data to create audience cohorts
Semrush and Similarweb provide information, including the prompts that led an AI platform user to click through to a publisher’s site, that Forbes is able to use to learn more about its AI-referred audience’s interests.
AI slop myths, debunked: What’s harmful, what’s hype, what’s just meh
AI slop has become a catch-all for low-quality AI content, because it’s fast, sticky shorthand. But that convenience hides the nuances that are emerging.
Media Briefing: Overheard at the Digiday Publishing Summit Europe, October 2025 edition
Publishers said they have lost hope that traffic will ever bounce back, in a closed-door town hall session at the Digiday Publishing Summit Europe