At A Glance
Sell-side decisioning is changing how publishers and advertisers collaborate, improving efficiency and fostering more meaningful connections. Experian’s syndicated audiences and data solutions help both sides reach the right audiences with greater transparency and privacy.In our Ask the Expert Series, we interview leaders from our partner organizations who are helping lead their brands to new heights in AdTech. Today’s interview is with Paul Zovighian, VP of Marketplaces at Index Exchange.
Sell-side activation vs. buy-side packaging
What’s fundamentally changed with sell-side decisioning, and how does it now diverge from traditional buy-side packaging?
Sell-side decisioning is programmatic’s next major evolution – one that redefines how intelligence enters the transaction. Advances in infrastructure and computing power now allow supply-side platforms(SSPs) to act in the crucial pre-bid moment, enriching impressions with context, quality, and data before they reach the buy side.
This isn’t just about efficiency; it’s about unlocking new value. Smarter requests mean buyers see only the most relevant opportunities, while publishers gain recognition for the true worth of their audiences and environments.
We’re still at the beginning of this shift. Many players still package inventory without engaging in real pre-bid intelligence. As the market matures, the companies that evolve toward sell-side decisioning will be the ones to set the pace for programmatic’s future.
Economic shifts with scaled curation
As curation scales, what economic levers shift for both publishers and buyers, and how do those shifts influence deal structure and media planning?
As curation scales, one of the most powerful levers is data. It’s the industry’s most valuable asset, and on Index it keeps its full worth. We don’t take a platform cut or add hidden fees, so data partners benefit from the clearest, most efficient economics in the market. Data vendors gain confidence that their economics aren’t eroded by a platform tax.
For publishers, this means stronger yield and more ad spend flowing directly into working media. When data retains its full value, it enhances how impressions are packaged, priced, and differentiated—driving more competition for quality inventory and more opportunities for revenue.
For buyers, it means compressed supply paths and total transparency – they know exactly what they’re paying for. With no intermediaries and full transparency into economics, buyers gain a clearer view of where their budgets go and the confidence that their investments reach real audiences in trusted environments. They benefit from cleaner supply chains, better performance, and more meaningful alignment between spend and outcome. The result is a healthier marketplace where both sides benefit from efficiency, fairness, and scale.
Moving decisions upstream for value
What decisions historically made in DSPs should now move upstream to publishers or SSPs to unlock more value, and which should remain buy-side?
Decisioning is no longer confined to demand-side platforms(DSPs). We can enrich impressions by applying intelligence — via data, algorithms, creative technology, and more, before they even reach the buy side — adding context, filtering out low-quality supply, and expanding audience discovery.
This isn’t about shifting roles; DSPs remain critical for campaign strategy, optimization, and budget allocation. The sell side simply ensures every bid request is smarter from the start, creating more value for all parties.
In doing so, we also alleviate pressure on DSPs — enabling more comprehensive data discovery by searching for signals at the top of the funnel, prior to optimization. That means DSPs can focus on what they do best, supported by a cleaner, more transparent supply path.
Index Marketplaces use cases explained
Index Marketplaces is designed to enable the strength of our partners, and Experian brings one of the broadest sets of demographic and audience insights in the industry. That scale enables a wide variety of applications, from more precise audience activation to deeper measurement and analytics.
What’s different on the sell side is how those insights are applied. By activating Experian’s syndicated audiences directly at the point of decision, their value is realized in real time and across the full scale of the open internet. Buyers gain a clearer path to relevant audiences, and publishers benefit from stronger alignment between data and media.
It’s an approach that ensures partners like Experian can maximize the impact of their assets while helping the market move toward more intelligent, performance-driven activation.
Identity signals with stronger privacy
For identity partners like Experian, what’s the right way to bring audience, context, and propensity signals into sell-side activation?
The beauty of sell-side decisioning is that it reduces the hops in how identity signals are applied. Without it, IDs have to travel through multiple platforms, creating extra handoffs and additional risks of data loss or leakage.
With sell-side decisioning, those signals are obfuscated under a deal ID and applied directly at the point of decision. That means audience, context, and propensity data are activated securely, without ever leaving the sell-side environment.
For partners like Experian, it’s the cleanest path to value: fewer hops, stronger privacy protection, and clearer economics for everyone in the chain.
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FAQs
Sell-side decisioning allows publishers to add intelligence, like audience data and context, before ad impressions are sent to buyers. This makes the process more efficient and ensures advertisers see only the most relevant opportunities.
Traditional buy-side packaging happens after impressions are sent to demand-side platforms (DSPs). Sell-side decisioning moves some of that intelligence upstream, enriching impressions earlier and reducing inefficiencies.
Curation refers to the process of organizing and enriching ad inventory with data and context. For publishers, it leads to better yield and more ad spend going directly to their media. For advertisers, it means clearer, more transparent supply paths.
By applying audience and identity signals directly on the sell side, data stays within a secure environment. This reduces the number of platforms handling sensitive information, lowering the risk of data loss or leakage.
Experian provides demographic and audience insights that are activated directly at the point of decision. This helps advertisers reach the right audiences more effectively while ensuring publishers can maximize the value of their inventory.
When publishers and SSPs handle some decisioning earlier, DSPs can focus on campaign strategy and optimization. This creates a cleaner, more efficient process for everyone involved.
A deal ID is a unique identifier used in programmatic advertising to bundle audience and context signals securely. It ensures data is applied without being exposed or shared across multiple platforms.
About our expert
Paul Zovighian, VP of Marketplaces, Index Exchange
Paul Zovighian carries over a decade of industry expertise, stemming from his analytics and optimization roots to his current post as VP, Marketplaces, where he is focused on the commercial activation of Index’s newest product, Index Marketplaces. Previously, in his role as VP of corporate development, Paul led Index’s first-ever business acquisition. In his spare time, he enjoys long walks on the beach and befriending cats in NYC’s thriving bodega community.
About Index Exchange
Index Exchange is a global advertising supply-side platform enabling media owners to maximize the value of their content on any screen. They’re a proud industry pioneer with over 20 years of experience connecting leading experience makers with the world’s largest brands to ensure a quality experience for consumers.
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Adapt with Tapad, a part of Experian Leading browsers have made public announcements and technical deployments to reduce the digital advertising accessibility of third-party cookies for data collection, storage, and sharing due to growing privacy concerns. As a result, there has been growing momentum to find an alternative via cookieless IDs, with the intent to create a replacement that helps ensure continuity across the ecosystem. At Tapad we’ve chosen to approach the market with a solution that provides agnostic interoperability for these cookieless identifiers, so that marketers can continue to work with the identity providers of their choice while maintaining the most holistic view of consumers across digital touchpoints. Introducing switchboard Switchboard is a module within The Tapad Graph that leverages our core capabilities across machine learning and identity management to provide a connection between traditional digital identifiers and the new wave of cookieless IDs that will be utilized in the future. Customers of Tapad can take advantage of its broad ecosystem of identifiers to drive targeting and frequency capping strategies and enable detailed measurement and attribution post-deprecation of the third-party cookie. Our goal is to accelerate the adoption, scale, and utility of cookieless IDs with the release of the Switchboard module within The Tapad Graph, while maintaining an agnostic approach to the market. Switchboard for identity solutions In the evolving landscape agencies and marketers will need to invest, test, and analyze the best combination of cookieless ID partners to meet their objectives. 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We look forward to collaborating with Tapad and the industry as we collectively transition to support cookieless identity. — Don Lee |SVP of Global Platform Partnerships | Eyeota We are excited to participate in this proactive solution to the sunset of third-party cookies. Switchboard’s agnostic interoperability, with BritePool and other ID providers, will create high-value for marketers as they transition to the era of cookieless web advertising. — David J. Moore | CEO | BritePool Interoperability is paramount for brand marketers, agencies, publishers and platforms if we want to support an open and free Internet and break free of the stranglehold of walled gardens. 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We see collaboration as being critical to a collective understanding of identity and Tapad, a part of Experian as a trusted partner with solutions such as Switchboard to support continuity for marketers’ addressability. — Drew Stein | CEO and Founder | Audigent Facilitating access and usage of 1st party identifiers is crucial to help marketers prepare for the cookieless future. Thanks to Switchboard, ID5’s cookie-less IDs will be available to a wider audience of brands and agencies and enable them to run effective, data-driven campaigns beyond the third-party cookie. — Mathieu Roche | CEO and Co-Founder | ID5 Addressing the current identity challenge requires transparency and collaboration. We are pleased to align ShareThis data with Tapad + Experian’s growing ecosystem. ShareThis data helps marketers evolve beyond the cookie to complete the picture. Tapad + Experian’s Switchboard offering will support ShareThis’s deep connections to clients and technology platforms, preserving and growing the accessibility of our data. — Michael Gorman | SVP Product and Business Development | ShareThis Get in touch
With the emergence of email addresses as a currency for brands to communicate with their consumers offline; attaching email data to in-store purchases lays the groundwork for future advertising strategies. However, this advantage in having an additional digital touchpoint also creates a new challenge for marketers. How do they connect what they know about their customers via offline data and PII, or personally identifiable information, with what they want to know about their online behaviors and interactions? Taken a step further, how can they create actionable strategies that connect these two streams of consumer insights in order to drive them to make more future purchases; and even become loyalists? At a time when the shift from traditional to online shopping feels more like a landslide; connecting online and offline data has never been more valuable or more urgent. The solution for these marketers lies in the framework of identity resolution; and a key capability called hashed email onboarding. Hashed email onboarding is a privacy-safe way to connect consumer email addresses to their related digital devices and other digital identifiers. The methodology prevents the consumers actual email address from being readable; while still providing marketers a connection between those emails and other touchpoints for an individual. Instead of understanding the customer journey in two distinct parts; how they interact with a brand or company offline and separately how they interact with a brand online; hashed email onboarding allows for the two parts to be woven together in a holistic view of that consumer. The power of connecting these data sets can be seen when combining offline and online attribution and measurement to improve frequency capping and look-alike modeling. It’s important to note that not all identity resolution vendors that onboard hashed emails function in the same way or provide the same level of data. Some connect only to desktop or only to mobile devices; while others don’t actually make direct linkages at all- they simply provide the hashed emails as a targetable digital audience for upload. While hashed email onboarding and the connection between offline and online data is a powerful strategy; it needs to be as structured as possible across the most data available to reveal truly efficient targeting and measurement strategies. Tapad, a part of Experian has built a hashed email product feature that works with the existing flexibility of The Tapad Graph to deliver the most holistic consumer view in the structure that works best for your business objectives. Get in touch
To our valued customers and partners, it’s been an exciting week here at Tapad! As announced in a press release this morning, Tapad is now a member of the Experian family. We’re thrilled to continue to grow as a leader in identity resolution under the umbrella of a global expert in data, analytics and technology. Tapad and Experian are deeply connected by our commitment to serving the needs of our customers; and with a focus on quality of the data we provide, we have a common goal for the future of identity in the advertising ecosystem. As part of this announcement, we wanted to assure you, our valued customer, that we remain deeply committed to serving you today just as we always have. Nothing will change in your daily operations with Tapad. Experian immediately recognized that the success and growth of Tapad was directly tied to the strength and depth of its team members. As such, the acquisition will not result in any changes to day-to-day contacts at Tapad, or processes with weekly graph deliveries and other product support. Experian’s faith and investment in Tapad’s future and the future of identity resolution underscores what we’ve always believed our products could achieve and that we will be able to continue serving brands, advertisers, publishers, and the advertising and marketing ecosystem for years to come. On a personal note, I am excited to be transitioning my role as Chief Operating Officer of Tapad to the General Manager position of a global business that’s achieved exponential growth over the past several years; culminating in this strategic acquisition that will no doubt bring even more value to our customers in the future. We remain committed to open communication and welcome any questions you may have. Thank you,Mark Connon | General Manager, Tapad Contact us today