Home Data Alternative IDs Hold Promise, But Lack Scale

Alternative IDs Hold Promise, But Lack Scale

SHARE:
From left: AdExchanger Managing Editor Allison Schiff; Michelle Nagelberg, Choreograph (GroupM); Alan Silverberg, Publicis Collective; and Brittany Schermerhorn, Razorfish.

Preparing for signal loss takes a lot of trial and error. And media buyers are still (yes, still) busy assessing their options, including alternative identifiers.

UID 2.0, ID5, Lotame’s Panorama ID and dozens of others are all on the list.

But buyer beware: Alt IDs are not the silver bullets buyers and sellers wish they were, said Brittany Schermerhorn, SVP of media at Publicis-owned Razorfish, at AdExchanger’s Programmatic I/O event in Las Vegas this week.

Even so, agencies have their work cut out trying to convince marketers to invest in trying alt IDs.

Putting alt IDs to the test

From a client perspective, “we’ve been burned” since previous testing hasn’t yielded the expected results, said Alan Silverberg, EVP of data and platform solutions at Publicis Collective.

Scale – or, rather, the lack of it – is one reason for the less-than-impressive test results. The more Google pushes its third-party cookie deprecation deadline, the less seriously marketers take the threat of signal loss. And it certainly doesn’t help that there are scores of alt IDs out there.

Still, a few favorites have emerged – especially UID 2.0 – although most alt IDs are still struggling to get broad advertiser and publisher adoption.

Even UID2 is far from perfect, though. It’s a promising alt ID, Silverberg said, but “I don’t think it’s where it ultimately needs to be” in terms of scale just yet. Most of the recent adoption for UID2 is happening specifically among connected TV publishers.

No wonder marketers are putting testing on the back burner.

Setting expectations

Subscribe

AdExchanger Daily

Get our editors’ roundup delivered to your inbox every weekday.

One tactic agencies have adopted to persuade advertisers not to give up on alt IDs is pointing out that testing happens in phases.

If testing isn’t yet yielding the performance brands expect, it’s because performance comes later, around phase two, Schermerhorn said. Alt ID testing is still in phase one.

There are “more important things we’re learning from the testing than how it’s actually performing,” she said, referring to data accuracy and match rates with first-party data.

For now, testing should focus on “connecting the pipes,” Schermerhorn said, which includes checking match rates and making sure alt IDs can actually scale down the line.

Must Read

Comic: Marketer Resolutions

Hershey’s Undergoes A Brand Update As It Rethinks Paid, Earned And Owned Media

This Wednesday marks the beginning of Hershey’s first major brand marketing campaign since 2018

Comic: Header Bidding Rapper (Wrapper!)

A Win For Open Standards: Amazon’s Prebid Adapter Goes Live

Amazon looks to support a more collaborative programmatic ecosystem now that the APS Prebid adapter is available for open beta testing.

Gamera Raises $1.6 Million To Protect The Open Web’s Media Quality

Gamera, a media quality measurement startup for publishers, announced on Tuesday it raised $1.6 million to promote its service that combines data about a site’s ad experience with data about how its ads perform.

Privacy! Commerce! Connected TV! Read all about it. Subscribe to AdExchanger Newsletters
Jamie Seltzer, global chief data and technology officer, Havas Media Network, speaks to AdExchanger at CES 2026.

CES 2026: What’s Real – And What’s BS – When It Comes To AI

Ad industry experts call out trends to watch in 2026 and separate the real AI use cases having an impact today from the AI hype they heard at CES.

New Startup Pinch AI Tackles The Growing Problem Of Ecommerce Return Scams

Fraud is eating into retail profits. A new startup called Pinch AI just launched with $5 million in funding to fight back.

Comic: Shopper Marketing Data

CPG Data Seller SPINS Moves Into Media With MikMak Acquisition

On Wednesday, retail and CPG data company SPINS added a new piece with its acquisition of MikMak, a click-to-buy ad tech and analytics startup that helps optimize their commerce media.