# Amazon Wires the Identity Stack Together Before NewFronts
> Three releases inside one publicity window — Acxiom audiences live in DSP, DTE donated to IAB Tech Lab, Samsung Ads in APC — finish a six-year stack-build.
- Publication: The State of Streaming
- Section: Advertising & Ad Tech
- Published: 2026-04-26T00:00:00.000Z
- Updated: 2026-05-02T00:00:00.000Z
- Byline: The State of Streaming Staff
- Canonical URL: https://thestateofstreaming.com/advertising-adtech/2026/04/amazon-identity-stack-consolidation/
- Read time: 6 min
## Summary
Inside one nine-day window in April 2026, Amazon publicized three releases — Acxiom audiences live in Amazon DSP's Audience Hub, Dynamic Traffic Engine donated open-source to the IAB Tech Lab, and Samsung Ads in Amazon Publisher Cloud — that finish a six-year ad-stack build ahead of the IAB NewFronts.

## Key facts

- On April 23, 2026, Acxiom and Amazon Ads publicized a deepened partnership making 10,000-plus Acxiom Real ID audiences directly available in Amazon DSP's Audience Hub across the U.S., U.K., and Germany; Acxiom said the audiences had been in-market since March 16, with the BusinessWire release timed to the POSSIBLE Conference April 27 to 29.
- On April 15, 2026, the IAB Tech Lab announced Amazon Ads' donation of Dynamic Traffic Engine, a bid-shaping framework Amazon had run in closed beta since January 2025 with partners including OpenX and PubMatic, as an open-source project under the Tech Lab's Open Source Initiative.
- On December 12, 2025, Samsung Ads disclosed an integration with Amazon Publisher Cloud connecting Samsung's smart-TV signals with Amazon's authenticated graph through AWS clean-room infrastructure; coverage continued to amplify the partnership through the 2026 NewFronts.
- Acxiom said its 10,000-plus audiences sit on the Acxiom Real ID identity foundation with match rates that 'often exceed 80 percent,' and that Amazon's authenticated graph reaches 'over 90 percent of U.S. households' — vendor figures, not independently audited.
- PubMatic CEO Rajeev Goel told MediaPost that participation in the DTE closed beta delivered 'up to a 10 percent increase in eCPM' — a PubMatic-reported metric, not independently audited.
- The publicity window opened the same week the Trade Desk's Q1 2026 earnings call (May 7) approaches with guidance implying about 10 percent growth, after MoffettNathanson called the deceleration a 'fundamental shift' in February.


## Why it matters

The April releases are the wire-up of an Amazon ad stack that has been building since the 2019 Sizmek acquisition: ad server, then clean room, then publisher clean room, then DSP redesign, then identity layer, then bidstream-shaping protocol. None is news on its own; together they read demand-side identity and supply-side curation routing through Amazon's authenticated graph at the moment Trade Desk is repositioning Ventura around the same problem. For ad buyers, the practical question coming out of the March NewFronts is which open-internet activation path carries less rent and more measurable lift — and Amazon has spent the last 12 months making the answer harder to write without it.


## What to watch

- May 7 Trade Desk Q1 2026 earnings call: any quantitative response to Amazon's stack-consolidation moves, including OpenPath share commentary and Ventura Ecosystem adoption metrics.
- Whether additional supply-side platforms beyond OpenX and PubMatic publicly endorse Dynamic Traffic Engine in the weeks ahead, and whether Magnite — conspicuously absent from the April 15 endorsement cluster — takes a position.
- July 2026 launch of the Amazon Ads × Samsung TV Plus interactive 'Add to Cart' format announced at the March 23–24 NewFronts presentation, the first end-to-end shoppable CTV implementation routing through Samsung's OS into Amazon's commerce graph.
- Whether Amazon publishes a standalone Audience Hub product page; the term appears in the April 23 Acxiom release as if established but has not yet anchored an Amazon-issued product disclosure.
- Whether IAB Tech Lab receives comparable bid-shaping contributions from Google, Meta, or Microsoft, or whether DTE remains the only hyperscaler-donated standard — the test of whether 'open source' here reads as an industry baseline or as Amazon's protocol with extra steps.

## Article
Inside one nine-day window, Amazon (NASDAQ: AMZN) wired together the seams of an ad stack it has been assembling for six years. [[Acxiom](/companies/acxiom/) announced on April 23](https://www.businesswire.com/news/home/20260423631341/en/Acxiom-Deepens-Amazon-Ads-Partnership-Making-10000-Audiences-Available-for-Immediate-Activation-in-Amazon-DSP) that more than 10,000 of its Real ID audiences are now directly activatable in Amazon DSP's Audience Hub across the U.S., U.K., and Germany. The release said the audiences have been live since March 16 and were publicized to land ahead of the POSSIBLE Conference April 27 to 29. Eight days earlier, the [IAB Tech Lab announced Amazon's donation of Dynamic Traffic Engine](https://iabtechlab.com/press-releases/iab-tech-lab-announces-dynamic-traffic-engine-donation-from-amazon-ads/), the bid-shaping framework Amazon had run in closed beta with [OpenX](https://blog.openx.com/openx-enhances-traffic-optimization-with-amazon-ads-dynamic-traffic-engine/), PubMatic, and other supply-side partners since January 2025, as an open-source project. And [Samsung Ads' December 12 integration with Amazon Publisher Cloud](https://news.samsung.com/us/samsung-ads-announces-integration-amazon-publisher-cloud-connect-streaming-browsing-shopping-signals), which connects smart-TV signals to Amazon's authenticated graph through AWS clean-room plumbing, kept generating activation through the [March 23–24 NewFronts](https://news.samsung.com/us/samsung-launches-performance-tv-full-funnel-performance-platform-ai-powered-ad-products), where Samsung Performance TV launched alongside an [Amazon Ads × Samsung TV Plus interactive ad partnership](https://advertising.amazon.com/library/news/newfronts-2026-advertising-news) with a July 2026 add-to-cart format. Three releases of mid-tier individual significance become the lead story when read together: Amazon spent 2019 to 2024 buying or building each layer of the open-internet ad stack, and the April publicity window is when the layers begin to interoperate at scale.

The stack lineage is the load-bearing context. Amazon [acquired the Sizmek ad server and DCO business in May 2019](https://techcrunch.com/2019/05/31/amazon-acquires-sizmek/), gaining the creative-and-serving plumbing the open internet had charged rent for. [Amazon Marketing Cloud followed in January 2021](https://advertising.amazon.com/library/news/introducing-amazon-marketing-cloud), giving advertisers an AWS-hosted clean room. [Amazon Publisher Cloud was unveiled at unBoxed 2023](https://advertising.amazon.com/library/news/unboxed-2023-clean-rooms) and [reached general availability in June 2024](https://aps.amazon.com/aps/resource/amazon-publisher-services-unveils-new-adtech-capabilities/) — the supply-side counterpart to AMC. Acxiom and Amazon [first integrated in March 2023](https://www.acxiom.com/news/acxiom-works-with-amazon-ads-to-power-customer-obsessed-every-channel-marketing/), exposing Acxiom audiences via DSP. [Amazon's next-generation DSP launched in October 2024](https://press.aboutamazon.com/2024/10/amazon-dsp-announces-next-generation-ad-tech-for-precise-full-funnel-reach-and-performance) with Performance+ tactics, an ads data manager, and the audience-activation surface the Acxiom release now refers to as Audience Hub. Dynamic Traffic Engine entered closed beta the same January, with OpenX and PubMatic among the participants. Each piece in isolation reads as a product update; pulled into the timeline, the pattern is the one Amazon has rarely articulated: assemble each layer of the open-internet ad stack the industry charges rent for, then quietly wire them together so demand routes back through Amazon DSP.

The April releases finish the wire-up. Acxiom, [described in its own release as Omnicom's connected data and identity foundation](https://www.businesswire.com/news/home/20260423631341/en/Acxiom-Deepens-Amazon-Ads-Partnership-Making-10000-Audiences-Available-for-Immediate-Activation-in-Amazon-DSP), is now a one-API-call audience source inside Audience Hub for U.S., U.K., and Germany advertisers, against the Amazon-claimed reach of more than 90 percent of U.S. households and the Acxiom-claimed match rate that, the release says, often exceeds 80 percent. Both figures are vendor self-reports; the operational claim is that the Acxiom audience layer no longer requires the API hop it did under the 2023 partnership. The Samsung-APC integration plugs the largest U.S. smart-TV signal pool, including viewing behavior, browsing, and shopping signal at the OS layer, into the same authenticated graph through Amazon's clean-room infrastructure, with Samsung Electronics SVP Eldad Persky framing the integration as combining "viewing behavior with shopping intent" for connected TV. The DTE donation puts the bid-shaping protocol Amazon designed and ran with partners into the Tech Lab's [GitHub repository](https://github.com/IABTechLab/DynamicTrafficEngine) and into the Tech Lab's Open Source Initiative governance, with three components: a DTE Cloud where demand signals are hosted, an Evaluator Library in Java and Golang for SSPs, and a Filtering layer that runs on the SSP side. Amazon Ads Director of Engineering Pieter de Zwart described the move as a shift "from guessing to knowing" in how SSPs read demand. IAB Tech Lab CEO Anthony Katsur called it "a massive leap toward a curated, hyper-efficient programmatic supply chain." The pattern that surfaces is the second time in 18 months Amazon has used standards-body donation as an act of strategy: build a protocol in production, prove it with named partners, donate it to the standards body as the de facto baseline, and run the largest reference implementation. [PubMatic CEO Rajeev Goel told MediaPost](https://www.mediapost.com/publications/article/414324/amazon-ads-donates-framework-to-improve-ad-bidstre.html) that participation drove "up to a 10 percent increase in eCPM" — a PubMatic figure, not independently audited, but the kind of supply-side endorsement that decides which protocol becomes the curation primitive everyone else routes through.

That second-order effect is where the April window starts to read as competitive escalation rather than housekeeping. The Trade Desk (NASDAQ: TTD) [relaunched Ventura as the Ventura Ecosystem on Feb. 24](/advertising-adtech/2026/04/trade-desk-ventura-ecosystem-pivot/), six weeks after which the SVP who built the framing departed, alongside the CMO and the head of communications. [Q1 guidance implied roughly 10 percent growth](/advertising-adtech/2026/04/trade-desk-ventura-ecosystem-pivot/), the slowest TTD has reported as a public company, with [MoffettNathanson on Feb. 26 calling the deceleration](https://www.investing.com/news/analyst-ratings/moffettnathanson-cuts-trade-desk-stock-price-target-on-slowing-growth-93CH-4527347) "a more fundamental shift in The Trade Desk's growth trajectory rather than a transitory slowdown." Amazon's three-leg release window is what hardening looks like across the same competitive surface. [Digiday reported in January](https://digiday.com/media-buying/omnicom-media-tackles-frequency-issues-in-tv-via-partnerships-with-amazon-and-roku/) on Omnicom Media's CES frequency-stack collaboration with Amazon, Roku, and Acxiom, with Omnicom Media North America Chief Product Officer Megan Pagliuca telling the publication "the speed of the Roku data is a lot faster, so it will be better for the actual optimization." That stack is the live precedent for what the Acxiom direct-integration release formalizes: the largest holdco buy-side organization, on stage at CES, routing identity, frequency, and reach through an Amazon-anchored pipe. Amazon's authenticated graph plus Acxiom Real ID plus Roku linear-and-streaming signal is one read of how a 2026 holdco frequency stack assembles outside the Trade Desk.

The DTE donation is also the open question that keeps the read honest. A protocol that an industry adopts because the largest demand-side participant designed it is governed by whatever the donor keeps building. Whether [Magnite](/advertising-adtech/2026/04/magnite-q1-2026-ctv-crossover-preview/), the largest pure-play SSP and conspicuously absent from the April 15 endorsement cluster that included OpenX and PubMatic, adopts DTE on its May 7 earnings call is a measurable signal of how universal the standard becomes outside Amazon's direct-partner orbit. Whether IAB Tech Lab receives comparable bid-shaping contributions from Google, [Meta](/companies/meta-platforms/), or [Microsoft](/companies/microsoft/) is the second test: if DTE is the only hyperscaler-donated framework, "open standard" reads as Amazon's protocol with extra steps. The PPC Land framing of the donation as supply-path-optimization governance designed to avoid Prebid-style fragmentation is the most plausible motive read; the AdExchanger framing of the donation as [a tool that promises to waste fewer bid requests](https://www.adexchanger.com/technology/amazon-ads-hands-the-iab-tech-lab-a-tool-that-promises-to-waste-fewer-bid-requests/) is the most plausible mechanism read. Both can be true. Both also support the simpler structural read: Amazon is hardening curation on terms it sets.

The forward calendar is short and the triggers are specific. The Trade Desk reports Q1 [after market close on May 7](https://investors.thetradedesk.com/news-and-events/events/event-details/2026/Q1-2026-The-Trade-Desk-Earnings-Conference-Call/default.aspx), the first on-record window for any TTD response to the Acxiom-Amazon expansion or the DTE donation. Additional supply-side endorsements of DTE — or pointed silences from Magnite, Index Exchange, and Equativ — will define how broadly the bid-shaping standard travels in the weeks ahead. And the July Amazon Ads × Samsung TV Plus add-to-cart launch is the first end-to-end shoppable CTV implementation routing OS signal into Amazon's commerce graph. None of these calendar events change what Amazon already published in April. They decide whether the open internet's response will be a competing stack or a shoulder-shrug.

## Entities

- Companies: Amazon.com, Acxiom, Omnicom Group, Samsung Electronics, OpenX, PubMatic, IAB Tech Lab, The Trade Desk, Charter Communications, Magnite
- People: Anthony Katsur, Pieter de Zwart, Chris Conetta, Rajeev Goel, Eldad Persky, Martin Wexler, Meredith Goldman, Megan Pagliuca
- Products: Amazon DSP, Amazon Publisher Cloud, Amazon Marketing Cloud, Acxiom Real ID, Dynamic Traffic Engine, Samsung TV Plus, Performance TV


## Corrections and updates

- 2026-05-02 — correction: Original published version stated the IAB NewFronts would 'begin May 11.' That was wrong: IAB NewFronts 2026 took place March 23–26 in New York City and had already concluded before this article was published. The forward-looking framing has been corrected to anchor on the May 7 Trade Desk Q1 print and the July Amazon × Samsung TV Plus add-to-cart launch.


## Sourced claims

- On April 23, 2026, Acxiom announced that more than 10,000 Acxiom audiences are directly available in Amazon DSP's Audience Hub, with U.S., U.K., and Germany scope and inventory access across Prime Video, Twitch, Amazon Music, and open-internet supply. — source: https://www.businesswire.com/news/home/20260423631341/en/Acxiom-Deepens-Amazon-Ads-Partnership-Making-10000-Audiences-Available-for-Immediate-Activation-in-Amazon-DSP
- Acxiom said the 10,000-plus audiences have been available since March 16, 2026, with the April 23 release publicizing the integration ahead of the POSSIBLE Conference. — source: https://www.businesswire.com/news/home/20260423631341/en/Acxiom-Deepens-Amazon-Ads-Partnership-Making-10000-Audiences-Available-for-Immediate-Activation-in-Amazon-DSP
- Acxiom's release said the audiences are built on Acxiom Real ID with match rates that 'often exceed 80 percent' and that Amazon's authenticated graph 'reaches over 90 percent of U.S. households.' — source: https://www.businesswire.com/news/home/20260423631341/en/Acxiom-Deepens-Amazon-Ads-Partnership-Making-10000-Audiences-Available-for-Immediate-Activation-in-Amazon-DSP
- Acxiom is the connected data and identity foundation for Omnicom and is part of Omnicom Media. — source: https://www.businesswire.com/news/home/20260423631341/en/Acxiom-Deepens-Amazon-Ads-Partnership-Making-10000-Audiences-Available-for-Immediate-Activation-in-Amazon-DSP
- The IAB Tech Lab announced on April 15, 2026 that Amazon Ads donated Dynamic Traffic Engine as an open-source project under the Tech Lab's Open Source Initiative. — source: https://iabtechlab.com/press-releases/iab-tech-lab-announces-dynamic-traffic-engine-donation-from-amazon-ads/
- IAB Tech Lab CEO Anthony Katsur said: 'The donation of the Dynamic Traffic Engine is a massive leap toward a curated, hyper-efficient programmatic supply chain.' — source: https://iabtechlab.com/press-releases/iab-tech-lab-announces-dynamic-traffic-engine-donation-from-amazon-ads/
- Amazon Ads Director of Engineering Pieter de Zwart said: 'For years, sellers have had to make educated guesses about what buyers want, without access to the signals that actually drive decisions. We're shifting from guessing to knowing, using a broader range of real high-value signals from across the programmatic buy brought directly into the process.' — source: https://iabtechlab.com/press-releases/iab-tech-lab-announces-dynamic-traffic-engine-donation-from-amazon-ads/
- Dynamic Traffic Engine has been in closed beta since January 2025 and is structured as a three-component framework: a DTE Cloud, an Evaluator Library in Java and Golang, and an SSP-side Filtering layer. — source: https://iabtechlab.com/press-releases/iab-tech-lab-announces-dynamic-traffic-engine-donation-from-amazon-ads/
- The DTE source code is hosted in the IAB Tech Lab GitHub organization. — source: https://github.com/IABTechLab/DynamicTrafficEngine
- OpenX described its DTE integration in a December 22, 2025 corporate blog, with Amazon Ads Director of Omnichannel Supply Chris Conetta quoted on the partnership. — source: https://blog.openx.com/openx-enhances-traffic-optimization-with-amazon-ads-dynamic-traffic-engine/
- PubMatic CEO Rajeev Goel told MediaPost that participation in DTE delivered 'up to a 10 percent increase in eCPM' for publishers. — source: https://www.mediapost.com/publications/article/414324/amazon-ads-donates-framework-to-improve-ad-bidstre.html
- AdExchanger framed Amazon's DTE donation as a tool that promises to waste fewer bid requests and reduce billions of unnecessary requests across the internet, citing Katsur's interview commentary. — source: https://www.adexchanger.com/technology/amazon-ads-hands-the-iab-tech-lab-a-tool-that-promises-to-waste-fewer-bid-requests/
- Samsung Ads announced its integration with Amazon Publisher Cloud on December 12, 2025, connecting Samsung's smart-TV streaming, browsing, and shopping signals with Amazon's authenticated graph through AWS clean-room infrastructure. — source: https://news.samsung.com/us/samsung-ads-announces-integration-amazon-publisher-cloud-connect-streaming-browsing-shopping-signals
- Samsung Electronics SVP Eldad Persky said: 'Combining viewing behavior with shopping intent creates meaningful opportunities for advertisers to connect with audiences through connected TV.' — source: https://news.samsung.com/us/samsung-ads-announces-integration-amazon-publisher-cloud-connect-streaming-browsing-shopping-signals
- Samsung Ads launched Performance TV at the 2026 NewFronts on March 23–24, 2026, alongside an Amazon Ads × Samsung TV Plus interactive video partnership with remote-enabled add-to-cart capability slated for July 2026. — source: https://news.samsung.com/us/samsung-launches-performance-tv-full-funnel-performance-platform-ai-powered-ad-products
- The Amazon Ads NewFronts 2026 hub described the Samsung TV Plus interactive partnership as a remote-enabled shoppable CTV format. — source: https://advertising.amazon.com/library/news/newfronts-2026-advertising-news
- Amazon Ads launched the next-generation Amazon DSP on October 15, 2024, including Performance+ tactics, an ads data manager, and an audience-activation surface. — source: https://press.aboutamazon.com/2024/10/amazon-dsp-announces-next-generation-ad-tech-for-precise-full-funnel-reach-and-performance
- Amazon Publisher Cloud reached general availability for U.S. and Canada streaming-TV and web publishers in June 2024. — source: https://aps.amazon.com/aps/resource/amazon-publisher-services-unveils-new-adtech-capabilities/
- Acxiom announced its initial global integration with Amazon Ads in March 2023, making Acxiom audiences available through Amazon DSP in the U.S., U.K., and Germany. — source: https://www.acxiom.com/news/acxiom-works-with-amazon-ads-to-power-customer-obsessed-every-channel-marketing/
- Amazon announced its acquisition of Sizmek's ad server and dynamic creative optimization businesses on May 31, 2019. — source: https://techcrunch.com/2019/05/31/amazon-acquires-sizmek/
- Amazon Marketing Cloud was introduced in beta on January 4, 2021 as an AWS-hosted clean room for advertisers. — source: https://advertising.amazon.com/library/news/introducing-amazon-marketing-cloud
- Amazon disclosed Amazon Publisher Cloud in beta at unBoxed 2023 on October 25, 2023, with DirecTV, Dotdash Meredith, Fandom, NBCUniversal, and TelevisaUnivision among initial partners. — source: https://advertising.amazon.com/library/news/unboxed-2023-clean-rooms
- Digiday reported on January 7, 2026 that Omnicom Media's frequency-management stack at CES 2026 combined Amazon Ads' authenticated graph, Roku's linear and streaming TV signals, Acxiom audience insights, and Omnicom's Omni intelligence platform. — source: https://digiday.com/media-buying/omnicom-media-tackles-frequency-issues-in-tv-via-partnerships-with-amazon-and-roku/
- Omnicom Media North America Chief Product Officer Megan Pagliuca told Digiday: 'The speed of the Roku data is a lot faster, so it will be better for the actual optimization.' — source: https://digiday.com/media-buying/omnicom-media-tackles-frequency-issues-in-tv-via-partnerships-with-amazon-and-roku/
- The Trade Desk reports Q1 2026 financial results after market close on May 7, 2026. — source: https://investors.thetradedesk.com/news-and-events/events/event-details/2026/Q1-2026-The-Trade-Desk-Earnings-Conference-Call/default.aspx
- The IAB NewFronts 2026 took place March 23–26 in New York City. — source: https://www.iab.com/events/newfronts-2026/
- MoffettNathanson on February 26, 2026 cut its Trade Desk price target to $32 and called the deceleration 'a more fundamental shift in The Trade Desk's growth trajectory rather than a transitory slowdown.' — source: https://www.investing.com/news/analyst-ratings/moffettnathanson-cuts-trade-desk-stock-price-target-on-slowing-growth-93CH-4527347

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