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.
Latest posts
If you are a mother, or if you know any mothers, you know that being a mom of an infant or toddler can be challenging. Not only is there an extreme amount of responsibility involved (and very little sleep!) but there is also a shift in social priorities. It’s no longer easy to ‘catch up with the ladies’ over drinks. Finding time to go on a date means finding a baby sitter and scheduling far in advance. And weekly poker nights at the neighbor’s house may no longer be feasible. It’s not a surprise, then, that moms with young kids (MYK’s) are very apt to become active on social media websites. In fact, according to a recent whitepaper by Experian Marketing Services, these moms are two times more likely than the average adult to use social media more than three times each day. And not only are they more likely to visit these sites, but they are also more likely to be active, posting and commenting two times more than the overall population. A possible explanation for this observation is that MYKs, especially those with infants, spend a lot of time at home with the kids and need an outlet that allows them to stay connected with family and friends. In that sense, social media—especially sites like Facebook (the top choice for MYK’s) where users can share photos, statuses and private messages—is ready-made for this segment. Beyond catching up with friends, these moms have a high propensity to follow brands and companies on social media platforms. Because they are so participatory as a segment, they offer a huge opportunity to marketers who may be looking to expand their target audience or narrow in on young mothers. Brands looking to target moms with young kids should consider offering deals through these social channels. They should also encourage moms to participate in their branded social media posts, both to interact with the brand directly and to support conversations between moms. Brands that offer time-saving ways to keep in touch and share ideas across platforms will do well with this segment. And marketers can get creative, too! Sponsoring “most beautiful baby” contests or starting discussions about the best way to calm a fussy child will not only give moms an entertaining break in their day, but will also help them associate the brand with positive, helpful experiences. For more information about moms with young kids, their online and mobile behaviors, and how to best reach them, download the whitepaper: From Diapers to Preschool: a window into the world of the Mom with Young Kids.
The holiday season is right around the corner and retailers are gearing up for a massive influx of customers, both new visitors and returning loyal patrons. But, organizations need to make sure they’re prepared to handle the influx of business. Data quality should be a priority for retailers at any time of year, but even more so as the holiday season approaches. During this time, it’s important for companies to provide customers with relevant shopping offers. When consumers shop for holiday gifts for their friends and families, they have countless directions to which they can turn. In order to prevail in competition, retailers need to provide customers with relevant offers and messages. Unfortunately, many businesses fall short in this regard. According to recent research from Experian QAS, organizations feel that, on average, 25 percent of their data is inaccurate. Consumers are frantically looking to find deals on products that meet their holiday needs, but loyalty offers may not be reaching consumers. One reason for the difficulty is the messy nature of companies’ customer databases. Retail businesses are working hard to gather as much information as possible about the consumers who patronize them, but all too often, information is riddled with errors. These errors have become more prevalent in recent years due to the proliferation of mobile apps, web interfaces and social media channels. There are so many different channels that companies now interact with people through an average of 3.27 channels. This poor data quality is hurting organizational bottom lines. Experian QAS found that an average of 12 percent of departmental budgets are wasted due to inaccuracies in contact data. During the 2013 holiday season, consumer spending is expected to increase by at least 11 percent. Retailers need to be certain that they improve data quality prior to the holiday season to ensure communications reach consumers and resources are maximized in order to take advantage of the expected increase. Be sure to check out our new data quality infographic.
Experian Marketing Services’ Head of Global Research Bill Tancer appeared recently on Fox Business News to talk about new holiday shopping trends, including why both retailers and consumers are starting the 2013 season earlier this year. “We are seeing the eventual extinction of Black Friday,” says Tancer. “What we see in our data is that retail is really changing. The consumer is relentlessly searching for that deal.” In fact, as Tancer notes, the hyper-connected, digital consumer is already searching for holiday deals. Hear more from Tancer in this clip. Watch the latest video at video.foxbusiness.com Tancer and other Experian Marketing Services data experts will discuss holiday marketing trends at an upcoming webinar; register for more insights and tips.