Two seats left to attend the Digiday Media Buying Summit:

Join us Oct. 15-17 in Phoenix to connect with top media buyers

SECURE YOUR SEAT

Ad Tech Briefing: Inside The Trade Desk’s POV on the future of open internet monetization

This Ad Tech Briefing covers the latest in ad tech and platforms for Digiday+ members and is distributed over email every Tuesday at 10 a.m. ET. More from the series →

To say there’s been some rancour in the ad tech ecosystem this year would be quite the understatement, and in his latest “Open Internet 2025” missive, The Trade Desk CEO Jeff Green reemphasized his long-running campaign against opacity in the digital ad supply chain.

In particular, his Oct. 2 opinion piece targeted resellers and supply-side platforms accused of duplicating and obfuscating bid requests. Green argued that recent changes to the industry’s Transaction ID, or “TID” (hurray for a new ad tech abbreviation), introduced by some resellers, undermine transparency and disadvantage premium publishers by making auctions less efficient.

He framed the conflict as a battle between publishers seeking fair yield and resellers protecting inefficient margins. In response, Green unveiled several initiatives aimed at restoring transparency, strengthening direct connections between buyers and sellers, and countering what he described as “supply-chain shenanigans.” They are below:

  • Launch of OpenAds, an open-sourced auction framework.
  • Integration of OpenAds with OpenPath for direct, “fair-market bidding.”
  • Ongoing use of a branched version of Prebid preserving original TID standards.
  • Introduction of PubDesk, an analytics portal offering publishers automated demand insights.
  • Enhanced enforcement against request duplication and bid manipulation via the Sincera acquisition.

Ahead of his on-stage appearance at this week’s Prebid Summit, Digiday caught up with The Trade Desk’s Mike O’Sullivan, co-founder of SIncera, to gain more clarity on the thinking of the self-styled “open internet DSP.”

The conversation below has been lightly edited for clarity and brevity.  

Digiday: If OpenAds is positioned as a fair auction, how can publishers be sure they won’t lose control over yield optimization? 

Mike O’Sullivan: I think it’s important to note that we’re not trying to do publisher-yield. What we’re trying to do is to get our bids as close to the publisher as possible, so they can effectively decide what to do with that bid… they can do yield management.

We’re doing OpenAds to have a clean option, and we can understand the supply chain. We can drive better buyer performance, and when we see that better buyer performance is heavily correlated with high-quality publishers. We’re trying to give publishers our best bid, and publishers can choose to use it or not.  

I think it’s exciting with some of the things that are happening with Google [in its ad tech antitrust trial], and we’re hopeful there’s new companies that come forward and do yield-management, because that’s been really difficult to do for the last 10 years with the way that Google Ad Manager has been structured

What assurances can The Trade Desk give that publishers won’t become dependent on one DSP for access to premium spend?

To a certain degree, we can’t control what the market looks like. I’d say there are around five DSPs that make up 90% of spend, so that’s not a lever that we can control. Meanwhile, there are far more intermediaries than there were five years ago, while the DSP side is numerically shrinking. 

OpenAds was introduced as driving a huge amount of efficiency in the supply chain. A lot of those intermediaries will feel threatened because they’re attracting more value than they’re creating, but by making the supply chain more efficient, hopefully, we’re opening the door for more buyers and more buying systems to come forward.

Do you see SSPs as redundant — or as still playing a necessary role in the ecosystem?

I think that SSPs can play a super-valuable role, there are a lot of different companies that exist in that category, and some really try to do the right thing, and many are trying to innovate. But with a lot of them, there’s a lot of signal manipulation and volume manipulation that’s happening today. 

However, if you ask me, “Is there a space for technology that serves publishers, especially in a post-Google/DOJ world?” [where its ad tech arm is divested], then I say, “100%, there’s never been a better time in terms of build opportunities to be an SSP.”

The Trade Desk’s Jeff Green and Mike O’Sullivan will further explain their opinions on stage at Prebid Summit, on Oct. 14.

What we’ve heard

“We had to wait in line for two hours, and then when you got in there, there was loads of room, I think it’s a total ego trip!” 

– ‘The ATG party’ was apparently the hottest ticket in town for the ad tech masses during AWNY’s opening night, but much umbrage was caused by the wait to get in. 

Numbers to know

  • 1 million: The number of downloads OpenAI’s Sora garnered in under five days
  • $10.8 million: the 2024 revenue for the latest public market ad tech company Knorex 
  • 20,000: The number of Advertising Week New York attendees
  • 12: the number of Amazon spokespeople on stage at this year’s AWNY, more than any other single company

What we’ve covered

Future of TV Briefing: WTF is IAB Tech Lab’s Concurrent Streams API?

The Concurrent Streams API is a specification that IAB Tech Lab introduced for streaming services to be able to report real-time viewership figures for live events.

Advertising Week Briefing: Amazon is primed to take over the ad industry

Amazon and Microsoft are teaming up, with the retail giant’s DSP absorbing the advertiser demand from the latter’s offering (R.I.P. Xandr neé AppNexus DSP).  

What we’re reading

AppLovin probed by SEC over its data-collection practices

The poster child for public market ad tech is love on Wall Street, but raising suspicions in the corridors of power. 

People Inc. cuts 6% of Its workforce

As if we needed any more reminder that being a publishing business really does suck in the internet economy. 

Zeta Global plans to quadruple client revenue with its new AI release

The company hosted Zeta Live in parallel to this year’s AWNY, marking it with the public debut of its Athena user interface.  

MRC’s auction-based standards: An inside look

Because it’s important to have standards, especially in the murky realms of ad auctions. 

More in Media Buying

Brand advertisers find awareness-boosting niche for interactive and shoppable CTV formats

As the holiday season approaches, more brands are embracing interactive CTV ads. But while retailers struggle to reliably squeeze sales from shoppable units, CPG, pharmaceutical and entertainment advertisers are putting interactive formats to use for brand awareness.

Unilever media agency assignments

Media Buying Briefing: The 5 industry themes we’ll discuss at this week’s Media Buying Summit

From the frenetic pace of consolidation taking place mainly across independents to the constant win-and-lose battle for clients, there’s been so small amount of change impacting the industry

Tubi hopes emotional context can drive demand for streaming’s long tail

A partnership between FAST provider and DSP Viant extends targeting capabilities for spoiled-for-choice advertisers.