Home Data Privacy Roundup Alternative IDs Are Still Battling For Bids, But Buyers Are Starting To Pay More Attention

Alternative IDs Are Still Battling For Bids, But Buyers Are Starting To Pay More Attention

SHARE:
alternative identifiers

If an alternative identifier is present in the bidstream, and no one transacts on it, does it make a sound?

The availability of alt IDs in open auctions has steadily increased, but demand has yet to catch up with supply.

“A lot of DSPs are listening, but not decisioning on the back of open IDs yet,” said Matt Davies, director of solutions consulting at BidSwitch, speaking during an identity-focused virtual event hosted by ID5 last week.

Blame the status quo, yo

Demand is lagging for a few reasons, one of which rhymes with schmookies.

Between 70% and 80% of Chrome web traffic is still cookied, according to BidSwitch’s data, which significantly decreases the urgency to buy on alt IDs. Janky as it may be, the status quo is still chugging along.

“When Google said cookies were going away in Chrome, everyone forgot about everything else,” said Jamie Penkethman, head of identity, data and measurement product marketing at Equativ.

Publishers, advertisers and their partners, meanwhile, associated alternative IDs with the amorphous future, something to deal with at some later point.

“And that is absolutely the wrong way of thinking,” Penkethman said.

ID Par-tee

Nevertheless, alternative ID adoption has continued apace.

Universal ID coverage has “grown quite substantially” in bid requests, Davies said, citing BidSwitch data from January.

Between 35% and 40% of web traffic across Chrome, Safari and Firefox in open auctions has an alt ID associated with it, and some bid requests contain multiple IDs – which is a good thing, said Lisa Abousaleh, VP of publisher and distribution partnerships at ID5.

ID5 obviously has a vested interest in pushing adoption of its own ID5 identifier. But when the economy thrives, everyone benefits.

“At the end of the day, it’s all about maximizing addressability, right?” Abousaleh said.

And it’s not as if we’ll end up with “just one ID to rule them all,” Davies said, or with a single replacement for third-party cookies.

Different IDs are valuable for different reasons. One might have more scale in a certain browser, for example, while another may have less volume but a niche channel focus.

“A lot of people are, like, ‘Which ID should I use? Which one should I choose?’” Penkethman said. “But it’s not about choosing one; it’s about finding ways to use all of them in conjunction with cookies.”

Not that any of this matters unless buyers and sellers experiment with alternative solutions pronto.

“Start testing now,” Abousaleh said. “Don’t wait for cookies to completely go away.”

🙏 Thanks for reading! I’m flying to Florida next week to visit my mother and here’s hoping I get to sit next to this little guy on the plane. As always, feel free to drop me a line at allison@adexchanger.com with any comments or feedback.

Must Read

Josh Reed, Zoom's VP of brand and content, speaking at AdExchanger's Programmatic IO event in New York City (September 28, 2006)

Zoom’s Marketing Challenge Is That It’s Too Well Known For Its Own Good

Zoom has 99% unaided brand awareness, which sounds great on paper. But there’s a catch: Most people still think it’s just a video-call app.

Why Agencies Think They Shouldn’t Own Agentic AI Tools Or The Data Used To Build Them

Agencies are differentiating their tech stacks by building custom agentic AI tools for their clients. And they’re rethinking owning those AI tools – particularly since licensing them creates new revenue streams.

Programmatic IO: Insurers Are Building Ad Tech’s AI Accountability Layer

Agencies and marketers discussed the future of AI governance at AdExchanger’s Programmatic IO NYC this week. The main takeaway? Expect insurers to play an increasingly important role in managing AI compliance.

Privacy! Commerce! Connected TV! Read all about it. Subscribe to AdExchanger Newsletters

Apple’s Latest Operating System Blocks The Trade Desk From Serving Ads On Safari

The Trade Desk is unable to serve ads to the Safari browser for Apple device owners that have downloaded iOS 27. Apple has been investigating the issue since last week.

Who Will Stand Up For The Open Web?

The open web is done, stick a fork in it. Banner blindness is near universal, search traffic has run dry and publishers are struggling for oxygen. But what if that’s … not true?

A comic showing lab techs as stand-ins for legislators experimenting with provisions for US state privacy laws, including restrictions on collecting sensitive data.

What Publishers Don't Know About New Jersey’s Data Broker Law Could Cost Them

Attention, publishers: Although you might not think of yourself as a data broker, in the great state of New Jersey, that’s not really your call anymore.