October 23, 2025 | SIGN UP

Sara Jerde

Sara Jerde
DIGIDAY, MANAGING EDITOR

Ad Context Protocol, or AdCP has been billed as a shared, standardized language for how AI agents communicate across advertising. We wrote about the debate surrounding AdCP and an explainer on what the heck it even means.

Another choose your own adventure for your attention spans: a quick look at OpenAI’s ChatGPT Atlas browser and also what this could mean for OpenAI’s ad plans.

Elsewhere, a new study found that e-commerce sites are seeing low sales from ChatGPT traffic.

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Top stories

Advertising’s new ‘universal language’ for AI agents sparks old debates about power and openness

The long search for order in advertising’s AI future.

WTF is Ad Context Protocol?

Open standard aims to let AI agents negotiate directly across ad tech, with comparisons to OpenRTB and header bidding.

PARTNER INSIGHTS FROM CONTENTFUL

Why marketers are taking a holistic approach to content management

The digital landscape is overflowing with content, creating significant challenges for brands aiming to effectively deliver personalized customer experiences. Balancing brand consistency with local market nuances can help marketers build a cohesive content strategy that enhances customer value.

The Rundown: OpenAI’s ChatGPT Atlas browser aims to turn the internet into a conversation

What marketers need to know about what to expect when the internet becomes chat.

A MESSAGE FROM V ISTAR

Why brands are trading vanity metrics for real impact

The most important brand metrics are often the ones that are hardest to measure. Emotional connection, cultural relevance and brand love don’t immediately show up on dashboards, if at all. But that doesn’t mean they don’t matter. In fact, they’re foundational. Trust builds memory, which builds preference — ultimately driving action.

From hatred to hiring: OpenAI's advertising change of heart

In less than a year, OpenAI execs have stopped the scorn and instead embraced the advertising world. We trace each tentative step.

E-commerce sites see low sales from ChatGPT traffic, new study finds

Referral traffic from ChatGPT converts far worse than traditional marketing channels such as Google Search, email and affiliate links, report.

PARTNER INSIGHTS FROM CRITEO

Why incrementality reveals insights that isolated measurement can’t

Retail media shoppers who see both display and sponsored products deliver 3.2 times higher revenue per user. Buyers exposed to both also spend 10% more than those who weren’t exposed. Incrementality uncovers the powerful campaign impact signals hidden in other KPIs.

Other things to know

PARTNER INSIGHTS FROM SIMPLI.FI

Report: Taking CTV beyond the living room

The way viewers access content and entertainment through TV is shifting at a breakneck speed. And so, too, must the way advertisers reach those viewers. Marketers should approach their CTV tactics with a full-funnel strategy. Because simply running a CTV ad is just the start.

PARTNER INSIGHTS FROM TINUITI