Publica, the connected TV ad server owned by Integral Ad Science, has integrated Optable's ID Switchboard into its platform, giving streaming and mobile in-app video publishers access to identifiers from several identity providers through a single integration, according to a post IAS published on November 5, 2026. Publishers decide in Publica's settings which buyers receive the extra signals. The only performance figure offered is an eCPM increase of about 20% at one unnamed US publisher, measured against inventory that carried no IDs at all.

In Short

A company that runs the ad system for TV streaming apps has plugged in a tool that can attach several different kinds of viewer ID tags to the ad slots a publisher sells. Advertisers tend to use their own preferred ID system to find the people they want, so a slot carrying a tag they recognise can draw more interest and higher prices. The change means publishers set this up once instead of building a separate connection for each ID company, although the only result shared so far comes from a single unnamed publisher.

What Publica and Optable connected

The problem the two companies describe is one of plumbing. In a programmatic auction, a buyer bidding on a CTV ad break wants to know whether the household on the other end belongs to an audience it is trying to reach. Buyers do not all use the same system to answer that question. According to IAS, one buyer may use UID2 through The Trade Desk to reach its audience, while another uses ID5, a London-based company that issues a shared pseudonymous identifier and runs a graph linking it to cookies, mobile IDs and CTV IDs. Each of those identity systems has traditionally required its own integration on the sell side, and "building and maintaining them individually, however, takes time and resources," the company wrote.

Optable's answer is the ID Switchboard. According to IAS, "Optable helps connect the audience information a publisher has with identifiers that advertising buyers can recognize through its ID Switchboard." By integrating that product with Publica, the resulting signals can travel to the buyers a publisher selects. Publica, in other words, is the publisher ad server that decides which ad fills each slot in a stream, and Optable sits beside it translating what the publisher knows about its audience into identifiers that buyers' systems can read.

Three identity systems are named. "The integration supports multiple identity solutions including LiveRamp, ID5, and UID2," according to IAS. The word "including" leaves the full list open. LiveRamp's identifier is RampID, a pseudonymous key for a person and household that lets separate companies recognise the same viewer without exchanging names or emails. UID2, or Unified ID 2.0, is the framework The Trade Desk built and administers, which LG Ad Solutions' adoption announcement in May 2024 described as built from hashed email addresses or phone numbers.

Control over where the signals go stays with the seller. "Publishers choose which buyer connections receive the additional signals through settings in Publica," according to IAS. The integration also stacks on top of whatever a publisher already passes: publishers "can also build on the identity connections they already use, since the integration adds to existing signals."

Availability is described in two sentences. "The integration is available globally for CTV and mobile in-app video. Publishers need an established relationship with Optable before enabling the connection in Publica." That second condition matters. The setup is not a toggle inside Publica that any customer can flip; it presupposes a separate commercial agreement with Optable, whose terms are not described.

A 20% figure without a method

The post's one number arrives in a single sentence. "When implementing Optable bid signal enrichment, a major U.S. publisher saw an ~20% eCPM increase compared to inventory without IDs," according to IAS.

Compared with what, exactly? Several things are missing from that sentence. The publisher is not named. The period, impression volume, buyer mix and device types are not given. The baseline is inventory without IDs, rather than the same inventory before and after enrichment, or inventory that already carried one identifier compared with inventory carrying several. A gap between two pools of inventory can reflect differences in who is watching, which apps or channels they use, and which buyers bid on them, as well as the presence of an identifier. The post does not say whether the publisher ran the enrichment through Publica at all, or through another Optable integration.

Context from earlier announcements shows how wide the range of such claims has been. When IAS agreed to buy Publica in 2021, then-chief executive Lisa Utzschneider said publishers on Publica saw on average a 30% lift in CTV yield, according to PPC Land's coverage of the deal. In audio, Optable's ID Switchboard produced a 2.4 times higher fill rate for inventory using UID2 traffic at iHeartMedia, and advertiser average daily spend rose 26%, according to the Triton Digital partnership announced in February 2025.

The opposite outcome has also been documented. In May 2026, PPC Land reported that a major national CTV publisher had sent improperly encrypted UID2 tokens in bid requests for three months without The Trade Desk, the sole UID2 administrator, detecting the problem. The publisher fixed the error itself and reported no measurable revenue change from UID2 either before or after the fix. Identifier enrichment, on that evidence, does not produce a predictable price effect, and a single unnamed case is thin support for a general claim.

Why identity fragments on the television screen

CTV inherited the identity problem of the open web without inheriting the cookie. A streaming app on a smart TV has no third-party cookie to sync, and the identifiers that do exist come from many sources: device-level IDs supplied by TV makers, IP addresses, hashed emails from logged-in viewers, and the proprietary graphs of identity vendors. A universal ID is meant to give every party in a transaction one shared pseudonymous key. In practice, several such keys compete.

The count of options has been large for years. IAB Australia named 47 identity providers advertisers were working with in a guide covered by PPC Land in February 2022, a list that included Criteo, Experian, Google, ID5, LiveRamp, Meta, Oracle Data Cloud, Unified ID 2.0 and Yahoo. In July 2026, the VAB published a 15-page guide titled "What's the Deal with Identity?", which named UID 2.0, OpenID and Ramp ID as universal ID products and urged buyers to question vendors on how match quality is validated - without setting any accuracy benchmark of its own, as PPC Land reported.

Streaming companies have tended to pick sides one at a time. Paramount enabled UID2 across owned channels including Paramount+ and Pluto TV in January 2023, operating as a private operator that hashed and salted data inside its own stack, according to PPC Land. ID5 signed Future Today in June 2025, covering 1.5 billion owned-and-operated CTV ad impressions. Each of those was a separate deal requiring separate engineering.

Identifiers built on IP addresses carry their own weakness. Only 23 percent of residential IP addresses reached their intended geographic target, according to research by Adstra and InterMedia cited in PPC Land's July 2026 report on Adobe Advertising and Eyeota. The IAS post does not say what data the ID Switchboard draws on when it maps a publisher's audience to buyer identifiers, whether logged-in emails, IP addresses, device IDs or some combination.

In-app video adds another layer. Mobile apps can already access the operating system's mobile advertising ID, a resettable device string. The post does not explain how the switchboard treats inventory that already has one.

Optable's switchboard, from audio to Publica

Optable is a Montreal-based company founded in 2020 with between 11 and 50 employees, according to PPC Land's earlier coverage, and its chief executive is Vlad Stesin. The ID Switchboard is not new. In February 2025 it was plugged into Triton Digital's supply-side platform for audio, with iHeartMedia as the launch publisher. That announcement named a different set of supported frameworks: UID2, Yahoo ConnectID, Epsilon PubLink and Criteo Encrypted Email. The November post names LiveRamp, ID5 and UID2. Only UID2 appears on both lists, and neither announcement presents its list as complete.

Since then, Optable's public messaging has moved toward AI agents. The company was a founding member of the Ad Context Protocol, which launched on October 15, 2025. In March 2026 its Audience Agent was connected to PubMatic's AgenticOS, and it was added to the IAB Tech Lab Agent Registry on March 11, 2026. A month later, Goodway Group put more than 70 team members on Optable's platform. In June 2026 the company published an agent readiness white paper concluding that most publishers were not prepared for agentic advertising.

The Publica integration contains none of that vocabulary. It is a conventional bid-enrichment product, sold to sellers on the premise that more identifiers in a bid request mean more buyers can recognise the impression. That is a revenue argument rather than an automation one, and the post makes it plainly: the opportunity, according to IAS, is "to make more of their audience recognizable to relevant buyers and create more chances to earn their spend."

Publica inside a private-equity-owned IAS

Publica has been part of IAS since August 2021, when the verification company agreed to pay $220 million, 75% in cash and 25% in stock. At the time, "Publica delivers over 3 billion ads on CTV every month," according to the deal coverage. Samsung Ads renewed its exclusive global partnership with Publica on September 30, 2025, a relationship that began in 2022 and covers Samsung TV Plus, which reaches 88 million monthly active users.

PPC Land's November 2025 survey of seven video ad servers described Publica as a fast-growing CTV-first ad server for unified auctions, aimed at FAST channels, CTV publishers and mid-to-large AVOD services. Its competitors in that survey were Google Ad Manager, FreeWheel's Streaming Hub, SpringServe by Magnite, Adtelligent, Aniview and Project Limelight.

IAS itself changed hands in the meantime. Private equity firm Novacap agreed in September 2025 to acquire the company for $10.30 a share in cash, a deal valued at about $1.9 billion. On July 7, 2026, IAS named Lidiane Jones, formerly chief executive of Bumble, as its new CEO. Publica has since become a route into IAS's measurement products: when IAS Total TV launched on April 27, 2026, opted-in publishers using Publica were among the supply covered, alongside Disney, NBCUniversal, Paramount and Prime Video.

Ownership of the ad servers themselves is shifting too. A report on October 23, 2026, said Comcast planned to move FreeWheel and Universal Ads to NBCUniversal when the latter is spun off, as PPC Land covered two days later. For publishers comparing ad servers, which identity connections come built in is one more line in that comparison.

Identity signals under pressure

The timing places the integration in a difficult autumn for identity vendors. Apple released iOS 27 on September 14, 2026, and within a week The Trade Desk could no longer serve ads in Safari on updated devices. The domains involved included adsrvr.org and UIDAPI.com, the latter tied to UID2. ID5, Audigent, LiveRamp and Permutive were added to the same blocklist during September, PPC Land reported. On October 3, ID5 co-founder and chief executive Mathieu Roche called the change "an attack against the business model of the web" and said regulators should look at it.

All three of the identity systems named in the IAS post were caught up in those browser changes. The Publica integration, however, concerns CTV and mobile in-app video rather than browser inventory, and the post makes no reference to Safari.

Ownership is another variable. Publicis Groupe agreed in May 2026 to buy LiveRamp for $38.50 a share, an equity value of $2.5 billion. The US Federal Trade Commission accepted a proposed consent order on October 19, 2026, requiring LiveRamp to operate as a commercially neutral provider to all US customers and firewalling Publicis from LiveRamp customer data, with independent audits every six months for two years after closing, according to PPC Land. Publicis closed the acquisition on November 2, 2026, three days before the IAS post. One of the three identity systems a Publica publisher can now pass to buyers therefore belongs to an advertising holding company.

Not every CTV seller is betting on more identifiers. On October 28, 2026, Comscore and Magnite brought Proximic's Predictive Audiences and ID-free activation into SpringServe, with Future Today among the first sellers, according to PPC Land. Future Today had added ID5 identity resolution the year before, so the same publisher now works with both approaches. How much of CTV's budget depends on either is hard to measure: an IAB Europe working group said in March 2026 that CTV's share of media budgets doubled from 14% in 2023 to 28% in 2025, PPC Land reported, while an IAB Europe report from January 2026 found 70% measurement frustration across 27 European markets.

What the post does not say

Several details that would allow a publisher or buyer to assess the integration are absent from the IAS post:

  • Pricing. No fee is given for Optable's service, and the post does not say whether Publica charges anything for the connection or how revenue is shared.
  • Full provider list. LiveRamp, ID5 and UID2 are given as examples; the post does not say how many identity systems are supported in total.
  • Input data and consent. The post does not describe which publisher data the ID Switchboard uses to generate buyer identifiers, or how consent is collected and passed for CTV viewers.
  • Market coverage. The integration is described as "available globally," but the post does not say whether each supported identity system is available in every market.
  • Adoption. No publisher is named as live on the Publica integration, and no count of participating publishers is given.
  • The 20% case. The publisher, period, sample and method behind the eCPM comparison are not disclosed.

No executive from either company is quoted in the post, which is signed by the "IAS Team" and filed under IAS's CTV and video and partner categories.

Timeline

Summary

Who: Publica, the CTV ad server owned by Integral Ad Science, and Optable, a Montreal-based identity and data collaboration company. The integration is aimed at CTV and mobile in-app video publishers and the buyers that use LiveRamp, ID5 or UID2 to find audiences.

What: Optable's ID Switchboard now connects to Publica, letting publishers pass identifiers from several identity providers to buyers they choose through one integration instead of separate builds. The integration adds to signals publishers already send. One unnamed US publisher saw eCPMs about 20% higher than inventory without IDs after implementing Optable's bid signal enrichment, with no method disclosed.

When: IAS published details of the integration on November 5, 2026.

Where: The integration is available globally for CTV and mobile in-app video, inside Publica's settings, for publishers that already have a relationship with Optable.

Why: Buyers rely on different identity systems, and each one has typically required its own integration on the sell side. The companies argue that one connection makes more of a publisher's audience recognisable to more buyers. It arrives as Safari blocks identity domains in browsers, LiveRamp passes into Publicis ownership and some CTV sellers turn to ID-free targeting.