
Ongoing signal loss is driving marketers, agencies, and platforms to turn to supply-side advertising. By using first-party data from publishers and platforms, supply-side advertising has the potential to deliver high-quality audience and context for more effective ad targeting.
The supply-side refers to the publishers and platforms that sell advertising inventory. These companies have access to first-party data about their users, which can be used to target ads more effectively. By tapping into supply-side advertising, you can overcome the challenges of signal loss and target ads more effectively.
To shed light on this topic, we hosted a panel discussion at Cannes, featuring industry leaders from Audigent, Captify, Newsweek, Pubmatic, Truthset, and Experian.

In this blog post, we’ll explore how partnerships between supply-side channels and publishers are working to enhance advertising opportunities while balancing the need for transparency and control in programmatic ad buying.
Shift toward supply-side advertising
Traditionally, the demand-side dominated the programmatic media buying chain due to an abundance of supply. However, with the emergence of finite data and its interpretation, collaboration between supply-side technology companies and publishers is required to redefine these economics.
It’s no longer sufficient for the demand-side to blindly negotiate prices based on limited knowledge. Marketers can still define their target audience, but effective communication is key. This presents an opportunity for premium journalistic outlets to guide the industry’s understanding of how data from the supply-side impacts media buying economics in the future.
“Supply-side technology partnerships with publishers are now in a position to shape the economics of programmatic media buying as there is a finite amount of data. It’s crucial for supply-side technology companies to collaborate with publishers to shape these new economics. This presents an opportunity for premium journalistic outlets to provide guidance on how data from the supply-side can affect the future of media buying.”
matthew papa, svp, business & corporate development, captify
Democratizing data from the supply-side
Cookies haven’t brought significant benefits to premium publishers. They mainly serve to retarget users from sites like The Wall Street Journal to advertising sites. This approach primarily serves the purpose of generating revenue.
The elimination of third-party cookies presents an opportunity for premium publishers to shift this dynamic. By using their knowledge of first-party audiences, and using identifiers like Experian’s LUID, publishers can own and understand their audience data, which can then be modeled.
Here’s how publishers can win
Establishing a connection with consumers and emphasizing the value exchange is essential to building trust. Determining what incentives and benefits consumers find meaningful will be crucial in gaining their opt-in.
With consumers
The Apple tracking transparency initiative, specifically the deprecation of IDFA signals, had significant implications for mobile app developers. Overnight, opt-in rates plummeted, causing a drastic decline in iOS ad monetization. To combat this, developers focused on demonstrating the value exchange to consumers—better ad experiences and personalized content.
By articulating the benefits over a couple of years, opt-in rates increased from 10-15% to 30-40%. The key takeaway is the need to effectively communicate the value exchange to consumers.
With partners
Trust plays a crucial role in planning your first-party data strategy. Publishers, advertisers, and data partners highly value their proprietary data. However, there are concerns about how it’s used, mishandled, or leaked in the ecosystem. Building trust between partners is essential. It’s important to work with trustworthy partners who are agnostic, committed to innovative solutions, and globally oriented. These partners can help navigate the complexities of laws and regulations. Choosing the right partners is crucial in a world where first-party data is a key asset.
“Power is shifting toward brands that have strong relationships with customers and possess first-party data. As the ownership of customer data becomes more important, it is crucial to establish a first-party data strategy to better serve customers and adapt to changing market dynamics.”
chip russo, president, truthset
Balance probabilistic and deterministic data
Focus on building trust with consumers and collaborating with reliable companies to share data. However, it’s important to remember that achieving a 100% opt-in rate is unlikely.
The cookie, which has become omnipresent, requires us to shift our strategic thinking. We need to consider both deterministic and probabilistic approaches instead of viewing them as mutually exclusive. The landscape will be fragmented, with some consumers opting in and others not.
“Probabilistic and predictive audience data holds immense potential. With the power of AI, we can expect enhanced performance and efficacy in media campaigns. At Audigent, we firmly believe that this data will outperform deterministic data, making it an integral part of our strategy.”
drew stein, ceo, audigent
Premium content
Trust plays a crucial role in leading to premium content. By placing trust in the best media brands, data, and technology partners, we can expect to see improvements in media, journalism, and advertising. This shift may have a direct impact on the long tail of free natural resources, making it more challenging for them to thrive. However, this change is ultimately beneficial since it promotes higher-quality media experiences overall.
“The homepage surface is making a comeback in the publishing industry, proving its value in establishing a direct connection with readers. While we acknowledge the importance of technology partnerships for addressability and identity, our core competency as a publisher remains outstanding journalism that captures and engages great audiences.”
kevin gentzel, cco, newsweek
Watch our Cannes panel for more on supply-side advertising

We hosted a panel in Cannes that covered supply-side advertising. Check out the full recording below to hear what leaders from Audigent, Captify, Newsweek, Pubmatic, Truthset, and Experian had to say.
Check out more Cannes content:
- Our key takeaways from Cannes Lions 2023
- Insights from a first-time attendee
- Four new marketing strategies for 2023
- Exploring the opportunities in streaming TV advertising
- The future of identity in cookieless advertising
Follow us on LinkedIn or sign up for our email newsletter for more informative content on the latest industry insights and data-driven marketing.
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.