
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

In a previous blog entry, Ordering sushi and a lesson in embracing the contextual marketing mindset, I showcased a fictitious scenario that required complex data point integration to pull off. These kinds of programs can seem overwhelming given the three barriers that many organizations face when embarking on their contextual marketing journey: Marketing sophistication A brand’s own conventional mindset and the programs that support it Actionable data Lack of clean and accurate data that prohibits real-time “on the fly” interactions Technology Disparate systems that are unable to link information across repositories, channels and interactions; inability to automate interactions in real-time Regardless of the barriers, there are ways you can show customers you’re listening and provide contextual messages without “boiling the ocean.” Take, for example, the recent viral blue/black vs white/gold dress debate. As the conversation spread throughout Facebook and Twitter, brands like Dunkin’ Donuts and Tide tweeted these contextual messages: The tweets did not go unnoticed as thousands of followers retweeted, commented and favorited these messages. The contextual elements used in these messages — channel preference and breaking/relevant news — are easily accessible to any brand. While the brands had to act swiftly, executing these messages circumvented the three barriers listed above. On the flip side, addressing the barriers can allow a brand to build more sophisticated, targeted contextual messages, as shown in the below example. Here, Experian Marketing Services and technology partner Movable Ink helped Finish Line deliver this sale announcement that adjusts based on the date and time the customer opens the email. The message remains relevant via a countdown clock during the run of the sale, a “warning” when it’s about to end and an alternative message after the sale ends — all of which ensures that the message is relevant regardless of when it’s opened by its intended recipient. And combining more contextual data points, such as location and stock, Finish Line includes the countdown, a local map to the customer’s nearest location and up-to-the-minute inventory of available sizes. Contextual marketing enables modern enterprises to engage in customer-centric conversations that — like any meaningful relationship — deepen across time and future points of engagement. This is particularly true in an era when consumers are overwhelmed by untargeted and disruptive marketing messages. By contrast, contextual marketing is designed to seamlessly and usefully merge into the customer’s daily activity. Want to know more and how to get started? Download the eBook From campaigns to context: Making the move to contextual marketing.

With online video viewing at an all-time high and television networks and system providers increasingly making video content available to those who don’t pay for television, many are wondering if we’re on the cusp of a massive spike in cord-cutting numbers. In our recent Cross-Device Video Analysis, Experian Marketing Services found that that 7.3 percent of all U.S. homes are cord-cutters, meaning they have high-speed Internet but don’t pay for TV. And the pace is increasing. In the last year alone, one million more homes joined the cord-cutter ranks bringing the total to 8.6 million households. It should come as little surprise that cord-cutting is on the rise. As we reported in our video viewing habits post, 57 percent of all American adults and 75 percent of Millennials now watch some sort of digital video during a typical week with the smartphone being the most commonly used device for watching video either streamed or downloaded from the Internet. Consumers thinking about cutting the cord will find an industry increasingly working to remove barriers that typically stand between cord-cutters and programming from their favorite networks — in exchange for a small fee. For instance, CBS recently announced the launch of CBS All Access, a digital subscription service that provides live and on demand viewing of CBS programming. And Dish Network launched Sling TV, an over-the-top pay service that allows cord-cutters to stream live and recorded programming from networks like ESPN, Univision, CNN, HGTV and more. With HBO announcing an April launch of their digital-only streaming service, HBO Now, March may be the last month that many pay for cable or satellite. If the cord-cutting ranks are, in fact, about to swell, a common question is: by how much? Experian Marketing Services estimates that there are currently 13.8 million Americans — representing 5.6 million homes — who are prime to cut the cord. Many of those individuals already have one foot out the door, if you will, given that they are more likely than average to say that they watch less television today because of the Internet. They are also more likely to watch HBO and be fans of at least one major professional sport making them good targets for Sling TV and HBO Now. Given that many cord-cutters already pay for Netflix and/or Hulu Plus, the net savings to those on the fence may be smaller than they think once they add up the costs they’ll assume from piecing together, à la carte, the various subscriptions and downloads required to keep watching their favorite programs. Whether or not we’re on the cusp of a major spike in cord-cutting, the fact is that consumers are increasingly getting their video content from digital sources and marketers need to understand where, how, when and what consumers are watching to ensure that their video campaigns are optimized for today’s digital consumer. For more information about cord-cutters and cross-device video consumption, including consumer receptivity to digital video advertising, download the Cross-Device Video Analysis.

Advertising Age recently released their annual Marketing Fact Pack, featuring data from Experian Marketing Services that looks at habits of digital consumers. This post highlights some of these findings. In the 2015 AdAge Marketing Fact Pack, we featured stats on key marketing and consumer trends impacting the advertising industry. Highlights include the lifestyle of the digitally connected consumer, including the habits of smartphone and television users, household and personal use of smart devices and the choice between becoming a cord-cutter and staying connected. An estimated 7.3 percent of U.S. households (8.6 million homes) today are considered “cord-cutters,” meaning they have high speed Internet but no cable or satellite television service. That number is up from 4.5 percent of households (5.1 million homes) in 2010, a comparative increase of 60 percent. Despite the growing number of consumers who use digital devices to watch video (as opposed to viewing on a television), it has not been enough to overwhelmingly convince all households to cut the cord. Instead, it seems as if the ability to stream or download video directly to the television is what ultimately seals the deal. As streaming devices like Roku, Apple TV, Amazon Fire TV and Google Chromecast become more common and as televisions themselves are increasingly connected to the Internet directly, we can only expect the number of cord-cutters to grow. To learn more about video viewing behaviors to improve your strategies for reaching digital consumers, register to join our upcoming webinar Online video: engaging consumers in a multi-screen world.