
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
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In our upcoming 2011 Digital Marketer Report, we will cover what influences purchase decisions. While you'll have to wait to read the report to see the entire list, when ranking influencers to purchase decisions: 54% of U.S. adults identified old-fashioned Word of Mouth (WOM), while information from webpages (47%) ranked second and online consumer reviews (31%) ranked as the third most important. It's nearly impossible to measure old-fashioned WOM, and “Information from a website” is a very broad category. Gauging the uptake in online consumer reviews is another story, however. Visits to online review pure-play Yelp.com is a good proxy for the uptake in online reviews in the service sector (restaurants, dry cleaners and dentists to name a few). Over the past two years, visits to Yelp.com have increased over 136%. Given such impressive and steady growth since 2009, you might assume that Yelp and other sites like it have become ubiquitous. Your assumption, however, would be incorrect. While age demographics of visitors to the site show that use of the online consumer reviews has reached maturity (Internet users over the age of 55 make up the largest age bin at 25%), geo-demographics, or visits by DMA, tell a completely different story. The top five cities by representation; San Francisco, San Diego, Monterey, Los Angeles and Sacramento reveal the first skew, that Yelp.com visitors favor the West Coast, where the company was founded. So it seems that, by percentage, the largest U.S. cities also figure significant. When looking at visitors to the site by Mosaic™ segments, Americas Wealthiest, Young Cosmopolitans and other affluent types figure heavily in the site's traffic. Taken all together, the numbers reveal that while Yelp.com continues to grow, its participants continue to be a very distinct subset of U.S. Internet users. This niche set of users might explain why traditional WOM continues to show more significance in influencing purchase decisions. Want to learn more about other purchase decision influencers? Click here to request a copy of Experian Marketing Services highly-anticipated 2011 Digital Marketer Report, launching in late March. The report features an editorial by Bill Tancer as well as unreleased data spanning email, social, mobile, search and more.

College basketball mania is here. First round NCAA tournament action tips off this week leading up to the Final Four in Houston and Indianapolis for the men and women respectively. With March Madness just around the corner, Experian Marketing Services' data team started to wonder — how do TV viewers of the men's tournament differ from viewers of the women's tournament? The women's game has come a long way since the first women's collegiate basketball championship in 1972. This will be the ninth year that all 63 games of the tournament are televised nationally. Looking back to 1982 when the finals were contested in Norfolk, Virginia, only 37 media credentials were issued. This has increased 14 fold when compared to the 530 media credentials issued in San Antonio last year. The men's game is as popular as ever drawing impressive TV ratings, especially during tournament time. Remember Butler's drive to the Final Four last year and their near upset of Duke? CBS reported that 48 million viewers watched at least some of the championship game. According to viewership data from Experian Simmons, men's tournament viewers outnumbered women's tournament viewers by a ratio of 3.7 to 1. That's nearly four men's tournament viewers for every viewer of the women's tournament. So who might be watching this year? Using Experian's Mosaic consumer lifestyle segmentation system combined with last year's tournament viewership data from Experian Simmons, we took a closer look. Men's Tournament Viewers Rise Above The Rim On Affluence The men's tournament draws a significant share of viewers from affluent households. Nearly half of viewers have household income of $75,000 or over. The ten most affluent Mosaic segments have an over-representation of men's tournament viewers compared to their corresponding share of U.S. adults. This includes Dream Weavers (well-off families with school age children, living an affluent suburban version of the American Dream), Enterprising Couples (married couples with children and childless duos living in upper-middle-class commuter communities), and New Suburbia Families (young, affluent working couples with pre-school children concentrated in fast-growing, metro fringe communities). Nearly half of the men's tournament TV viewers have household income of $75,000 or over. True to its name, the Dream Weavers segment is a college basketball advertiser's dream for home electronics, home furnishings, home improvement and home office supplies. All of these home-centered categories are near and dear to Dream Weaver householders many of whom will be following the men's tournament very closely in a variety of media formats including online, in HDTV, and on their smart phones. Brands and retail stores that have particular appeal to Dream Weavers include Nordstrom, Ralph Lauren, Nike, Eddie Bauer, Sephora, Dick's Sporting Goods and Banana Republic. But that's not to say that only affluent consumers are watching the men's tournament. Other segments with an above average concentration of men's tournament viewers include African-American Neighborhoods, Minority Metro Communities, America's Farmlands, and Young Cosmopolitans. Men's tournament viewers participate in a wide range of leisure and sport's activities (most notably golfing, football, softball, racquet sports, and weight training), have a preference for driving Cadillac, Acura, and Lexus automobiles, and have a high concentration of readers of such magazine titles as Golf Digest, Sports Illustrated, ESPN The Magazine, Barron's, and Black Enterprise. Women's Tournament Delivers Younger, More Ethnically Diverse Audience The audience for the women's tournament is decidedly different from the men's. About six out of every ten viewers have household income below $75,000. Mosaic segments with the greatest over-representation of women's tournament viewers include Struggling City Centers (young, single and single-parent minority renters living in low-income city neighborhoods throughout the South) and Minority Metro Communities (married couples and single-parent minorities with above-average incomes working in a mix of service industry and white-collar jobs). These two segments alone account for nearly 20% of the women's tournament viewing audience and contain about 2.5 times the concentration of viewers relative to their corresponding share of U.S. adults. Women's college basketball advertisers should note that the tournament delivers a less affluent audience compared to the men. Using Minority Metro Communities as an example, brands and retail stores that have particular appeal to this group and to the broader women's tournament audience overall include 7-Eleven, Ace Hardware, Hallmark, Sam's Club, Kmart, Dollar General, Big Lots, and Marshall's. Women's college basketball advertisers should note that the tournament delivers a less affluent audience compared to the men. Only four of the ten most affluent Mosaic segments have an over-representation of women's tournament viewers. When comparing a segment's share of the overall women's tournament viewing audience to its corresponding share of the men's tournament viewing audience, three of these four segments account for a higher share of women's viewers. These are America's Wealthiest, White Collar Suburbia, and Affluent Urban Professionals. Advertisers will be pleased to know that interest in the tournament from these segments helps lift the viewing audience into a higher income demographic. Using White Collar Suburbia as an example, retail stores that have particular appeal to this segment of the population include Brooks Brothers, Costco, Gap, J. Crew, Kohl's, Lord & Taylor, and Victoria's Secret. Other segments that contain a significantly higher share of women's viewers compared to men include Small-city Endeavors (a mix of lower income singles, families, and single parents living in older homes and small apartments in working class towns) and Professional Urbanites (upper-middle-class empty nesting couples and older singles in metropolitan areas). Men’s Tournament Viewers Compared to Women’s Tournament Viewers Men’s Tournament Top Ten Most Affluent Mosaic Segments Women’s Tournament America’s Wealthiest Dream Weavers White Collar Suburbia Upscale Suburbanites Enterprising Couples Small-town Success New Suburbia Families Status-conscious Consumers Affluent Urban Professionals Urban Commuter Families = Index of 100 to 125 = Index of 126 to 150 = Index above 150 The index shows the concentration of viewers for the men's and women's tournament for a segment compared to the segment's share of U.S. adults. For example, an index above 150 means that adults from the segment are 50% more likely to watch the tournament compared to U.S. adults overall.

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