2024 marked a significant year. AI became integral to our workflows, commerce and retail media networks soared, and Google did not deprecate cookies. Amidst these changes, ID bridging emerged as a hot topic, raising questions around identity reliability and transparency, which necessitated industry-wide standards. We believe the latest IAB OpenRTB specifications, produced in conjunction with supply and demand-side partners, set up the advertising industry for more transparent and effective practices.
So, what exactly is ID bridging?
As signals, like third-party cookies, fade, ID bridging emerged as a way for the supply-side to offer addressability to the demand-side. ID bridging is the supply-side practice of connecting the dots between available signals, that were generated in a way that is not the expected default behavior, to understand a user’s identity and communicate it to prospective buyers. It enables the supply-side to extend user identification beyond the scope of one browser or device.
Imagine you visit a popular sports website on your laptop using Chrome. Later, you use the same device to visit the same sports website, but this time, on Safari. By using identity resolution tools, a supply-side partner can infer that both visits are likely from the same user and communicate with them as such.
ID bridging is not inherently a bad thing. However, the practice has sparked debate, as buyers want full transparency into the use of a deterministic identifier versus an inferred one. This complicates measurement and frequency capping for the demand-side. Before OpenRTB 2.6, ID bridging led to misattribution as the demand-side could not attribute ad exposures, which had been served to a bridged ID, to a conversion, which had an ID different from the ad exposure.
OpenRTB 2.6 sets us up for a more transparent future
In 2010, the IAB, along with supply and demand-side partners, formed a consortium known as the Real-Time Bidding Project for companies interested in an open protocol for the automated trading of digital media. The OpenRTB specifications they produced became that protocol, adapting with the evolution of the industry.
The latest evolution, OpenRTB 2.6, sets out standards that strive to ensure transparency in real-time bidding, mandating how the supply-side should use certain fields to more transparently provide data when inferring users’ identities.
What’s new in OpenRTB 2.6?
Here are the technical specifications for the industry to be more transparent when inferring users’ identities:
- Primary ID field: This existing field now can only contain the “buyeruid,” an identifier mutually recognized and agreed upon by both buyer and seller for a given environment. For web environments, the default is a cookie ID, while for app activity, it is a mobile advertising ID (MAID), passed directly from an application downloaded on a device. This approach ensures demand-side partners understand the ID’s source.
- Enhanced identifier (EID) field: The EID field, designated for alternative IDs, now accommodates all other IDs. The EID field now has additional parameters that provide buyers transparency into how the ID was created and sourced, which you can see in the visual below:
Using the above framework, a publisher who wants to send a cross-environment identifier that likely belongs to the same user would declare the ID as “mm=5,” while listing the potential third-party identity resolution partner under the “matcher” field, which the visual below depicts. This additional metadata gives the demand-side the insights they need to evaluate the reliability of each ID.
“These updates to OpenRTB add essential clarity about where user and device IDs come from, helping buyers see exactly how an ID was created and who put it into the bidstream. It’s a big step toward greater transparency and trust in the ecosystem. We’re excited to see companies already adopting these updates and can’t wait to see the industry fully embrace them by 2025.”
Hillary Slattery, Sr. Director, Programmatic, Product Management, IAB Tech Lab
Experian will continue supporting transparency
As authenticated signals decrease due to cookie deprecation and other consumer privacy measures, we will continue to see a rise in inferred identifiers. Experian’s industry-leading Digital Graph has long supported both authenticated and inferred identifiers, providing the ecosystem with connections that are accurate, scalable, and addressable. Experian will continue to support the industry with its identity resolution products and is supportive of the IAB’s efforts to bring transparency to the industry around the usage of identity signals.
Supply and demand-side benefits of adopting the new parameters in OpenRTB 2.6
- Partner collaboration: Clarity between what can be in the Primary ID field versus the EID field provides clear standards and transparency between buyers and sellers.
- Identity resolution: The supply side has an industry-approved way to bring in inferred IDs while the demand side can evaluate these IDs, expanding addressability.
- Reducing risk: With accurate metadata available in the EID field, demand-side partners can evaluate who is doing the match and make informed decisions on whether they want to act on that ID.
Next steps for the supply and demand-sides to consider
For supply-side and demand-side partners looking to utilize OpenRTB 2.6 to its full potential, here are some recommended steps:
For the supply-side:
- Follow IAB Specs and provide feedback: Ensure you understand and are following transparent practices. Ask questions on how to correctly implement the specifications.
- Vet identity partners: Choose partners who deliver the most trusted and accurate identifiers in the market.
- Be proactive: Have conversations with your partners to discuss how you plan to follow the latest specs, which identity partners you work with, and explain how you plan to provide additional signals to help buyers make better decisions.
We are beginning to see SSPs adopt this new protocol, including Sonobi and Yieldmo.
“The OpenRTB 2.6 specifications are a critical step forward in ensuring transparency and trust in programmatic advertising. By aligning with these standards, we empower our partners with the tools needed to navigate a cookieless future and drive measurable results.”
Michael Connolly, CEO, Sonobi
These additions to the OpenRTB protocol further imbue bidding transactions with transparency which will foster greater trust between partners. Moreover, the data now available is not only actionable, but auditable should a problem arise. Buyers can choose, or not, to trust an identifier based on the inserter, the provider and the method used to derive the ID. While debates within the IAB Tech Lab were spirited at times, they ultimately drove a collaborative process that shaped a solution designed to work effectively across the ecosystem.”
Mark McEachran, SVP of Product Management, Yieldmo
For the demand side:
- Evaluation: Use the EID metadata to assess all the IDs in the EID field, looking closely at the identity vendors’ reliability. Select partners who meet high standards of data clarity and accuracy.
- Collaboration: Establish open communication with supply-side partners and tech partners to ensure they follow the best practices in line with OpenRTB 2.6 guidelines and that there’s a shared understanding of the mutually agreed upon identifiers.
- Provide feedback: As OpenRTB 2.6 adoption grows, consistent feedback from demand-side partners will help the IAB refine these standards.
Moving forward with reliable data and data transparency
As the AdTech industry moves toward a cookieless reality, OpenRTB 2.6 signifies a substantial step toward a sustainable, transparent programmatic ecosystem. With proactive adoption by supply- and demand-side partners, the future of programmatic advertising will be driven by trust and transparency.
Experian, our partners, and our clients know the benefits of our Digital Graph and its support of both authenticated and inferred signals. We believe that if the supply-side abides by the OpenRTB 2.6 specifications and the demand-side uses and analyzes this data, the programmatic exchange will operate more fairly and deliver more reach.
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NEW YORK, Oct. 24, 2019 /PRNewswire/ — Tapad, part of Experian and a global leader in digital identity resolution, today announced a new partnership with Retargetly, a leading independent full stack data company. The partnership combines Tapad's cross-device identity resolution technology with Retargetly's robust data toolset, allowing brands and agencies using Retargetly's platform to seamlessly access an expanded audience across devices, without compromising precision. In addition to reach expansion, Tapad's global, privacy-safe digital cross-device solution, The Tapad Graph, enables Retargetly's brand and agency clients a more holistic digital customer journey analysis, and efficient campaign capabilities like frequency capping and online attribution. At the same time, Tapad will be able to extend its presence into the LATAM region, tapping into Retargetly's existing regional footprint. "Combining The Tapad Graph's technology with Retargetly's platform will enable customers to make holistic, data-driven decisions that increase the ROI of their campaigns," said Chris Feo, SVP of Global Data Licensing and Strategic Partnerships at Tapad. "We can now offer advertisers the value of both technologies to optimize their marketing initiatives across the globe by creating seamless experiences across multiple devices and channels." Understanding a consumer's cross-device journey is a marketing necessity. A recent study showed that 75% of consumers expect a consistent experience from brands1. With the number of devices per individual rapidly increasing, digital identity resolution becomes essential to create that streamlined experience consumers crave. "Similarly to Tapad, our goal is to offer marketers a suite of products that can increase the ROI of their campaigns," said Juan Amuchastegui, Head of Product at Retargetly. "In order to achieve this, marketers need digital cross-device identity resolution to gain attribution, acquisition and reach expansion capabilities. We chose Tapad as our partner because The Tapad Graph has differentiated global scale, and privacy-safe measures, which we knew would benefit our clients' campaigns." Santi Darmandrail, Managing Director at Retargetly added, "Across the Americas our clients choose to work with us because of our scale, our precision, and our unique approach to what data can do to transform business outcomes. In that scenario, partnering with Tapad and integrating The Tapad Graph onto our platform was really a no-brainer and we are beyond excited to be making that available for our more than 700 clients across the region." To learn more about Tapad and our digital identity resolution products, visit our identity solutions page. Contact us today! About Tapad Tapad, Inc. is a global leader in digital identity resolution. The Tapad Graph, and its related solutions, provide a transparent, privacy-safe approach connecting brands to consumers through their devices globally. Tapad is recognized across the industry for its product innovation, workplace culture and talent, and has earned numerous awards including One World Identity's 2019 Top 100 Influencers in Identity Award. Headquartered in New York, Tapad also has offices in Chicago, Denver, London, Oslo, Singapore and Tokyo. About Retargetly: Retargetly is the leading independent data solution from Latam. Their proprietary platform processes over 25 billion data events a month and transforms them into actionable analytics that drive business results across the board. The recently launched Retargetly Audience Platform (RAM) is the number one data exchange in Latin America, with over 1000 active buyers and millions of dollars traded every year. Regargetly provides services across Latam and has offices in Buenos Aires, Mexico City, São Paulo and New York. For more information, visit www.retargetly.com
NEW YORK, Oct. 16, 2019 /PRNewswire/ — Tapad, part of Experian and a global leader in digital identity resolution, and The Trade Desk, a global advertising technology leader, partnered to integrate The Trade Desk's unified ID solution in April 2019. The Trade Desk's unified ID solution's objective is to serve as a standardized cookie ID to help marketers reach more of their audience on the open internet. After an initial six month period, Tapad reports significant adoption rates and enhanced customer results since their joint integration in April. As a result of the partnership, client brands, agencies, DMPs/ DSPs, Data Providers, Mobile Networks and Measurement/Analytics Providers, saw increased match rates up to 38% and more global coverage without compromising precision. With this combined offering, Tapad's global, privacy-safe digital cross-device solution, The Tapad Graph, connects brands with consumers over 4 billion devices globally. "There is a need for digital identity solutions outside the walled gardens that can accommodate the need for both precision and scale," said Chris Feo, SVP of Strategy and Global Partnerships at Tapad. "Through our partnership with The Trade Desk, we are empowering companies to have a comparable digital identity resolution across the open web as compared to the walled garden environments." Over 25 companies who license The Tapad Graph, such as Annalect, Semasio, Retargetly, and ThinkCX, have also included The Trade Desk's unified ID solution as a key identifier in their graph output. "The vast improvement in scale that Tapad has seen illustrates the value digital identity resolution products can bring for brands," said Nate Gawel, General Manager of Data Partnerships at The Trade Desk. "We're looking forward to continuing work with Tapad to prove that the open internet can deliver the very same benefits many reserve for large platforms." Adoption of the unified ID solution allows all parties across the supply chain (SSPs, DSPs, DMPs and data providers) to utilize The Trade Desk's cookie footprint to increase their own cookie coverage across the global independent internet. For more information, please visit The Trade Desk's unified ID solution site, or https://www.experian.com/marketing/consumer-sync to learn more about Tapad's digital identity resolution products. About Tapad:Tapad, Inc. is a global leader in digital identity resolution. The Tapad Graph, and its related solutions, provide a transparent, privacy-safe approach connecting brands to consumers through their devices globally. Our one-of-a-kind Graph Select offering enables marketers the flexibility and freedom of choice to correlate devices to varied objectives, driving campaign effectiveness and business results. Tapad is recognized across the industry for its product innovation, workplace culture and talent, and has earned numerous awards including One World Identity's 2019 Top 100 Influencers in Identity Award. Headquartered in New York, Tapad also has offices in Chicago, London, Oslo, Singapore and Tokyo. About The Trade Desk:The Trade Desk™ is a technology company that empowers buyers of advertising. Through its self-service, cloud-based platform, ad buyers can create, manage, and optimize digital advertising campaigns across ad formats and devices. Integrations with major data, inventory, and publisher partners ensure maximum reach and decisioning capabilities, and enterprise APIs enable custom development on top of the platform. Headquartered in Ventura, CA, The Trade Desk has offices across North America, Europe, and Asia Pacific. To learn more, visit thetradedesk.com or follow us on Facebook, Twitter, LinkedIn and YouTube. Contact us today!