
We’re excited to introduce the next segment in our Q&A series, Ask the Expert! Ask the Expert features a series of conversations with product experts where we dive into the areas you care most about like identity resolution, targeting, attribution, and more. Our next segment features a conversation about sell-side targeting.
Mike Chowla, SVP of Product at OpenX joins us to chat with Experian’s SVP of Sales & Partnerships, Chris Feo. OpenX is the world’s leading sell-side platform for audience, data, and identity targeting. In their conversation, Mike and Chris review:
- The shift to targeting on the sell-side
- How first- and third-party data are being used on the sell-side
- How OpenX is thinking about alternative IDs

What is sell-side targeting?
Sell-side targeting optimizes the way buyers and supply-side platforms (SSPs) work together. This approach moves the responsibility of inventory and audience targeting from the demand-side platform (DSP) into the SSP, providing advertisers with increased reach and better performance.
With sell-side targeting, locating your target audience becomes easier as you have a more direct connection with publishers. This increases your ability to scale against a target audience. Specifically, the SSP directly matches the buyer’s audience or data segment to the publisher inventory and audience and automatically sends the impression to the buyer’s DSP of choice via a deal ID, providing advertisers with improved reach and performance metrics as well as control over their inventory. With more direct access, your budget can likely go further, and you can decrease your effective cost per mille (eCPM) and get more working media.
“Supply-side targeting is the next phase of how supply path optimization (SPO) and buyers will need to work more closely with SSPs.” – Mike Chowla, SVP, Product, OpenX
Buying on the sell-side vs. open exchange
When buying on the open exchange, you have access to a vast number of impressions. With sell-side targeting, you can apply your campaign targeting directly on the supply-side and activate those impressions through a deal ID. Sell-side targeting works across various formats including web display, mobile, in-app, and connected TV (CTV) for a seamless advertising experience.
OpenX offers the unique capability to match users using their device graph within their SSP. This means you can target users from traditional data sources such as cookies or mobile ad IDs (MAIDs) and reach them in CTV or app environments. This gives you even more reach and precision in your advertising efforts.
The role of first- and third-party data on the sell-side
Buyers are showing a keen interest in bringing their own first-party data into the process of sell-side targeting. Meanwhile, certain agencies have been actively involved in working with identity and data. OpenX is currently collaborating with several agency ID solutions such as Choreograph, Merkel, and Horizon.
Buyers are also purchasing third-party data and data segments from various providers through OpenX’s platform for sell-side targeting purposes. By utilizing this data on the supply side, buyers are able to increase the match rate against their first- and third-party data segments in all environments. This ultimately maximizes scale against these audiences and drives a more efficient CPM due to eliminating waste.
Measurement and attribution on the sell-side
In the current state of SSP advertising, there is more of an emphasis on targeting capabilities than measurement and attribution. That said, SSPs can provide granular log level reports that can be utilized for multi-touch attribution (MTA) or mixed media models (MMM). These granular insights not only inform measurement and attribution models, but they also provide valuable optimization insights such as clearing price.
Additionally, advertisers have all of the same reporting options that they’re used to getting through their DSP because their buys are activated via deal ID in the DSP of their choice.
What to consider when transitioning to sell-side targeting
There are two primary items you should consider when transitioning to sell-side targeting:
- Supply
- Reach
Reach
Collaborating with partners who have the right capabilities can greatly improve reach and audience extension across different devices. For instance, if you bring your first-party audience or a third-party audience and are identifying that consumer via a cookie or MAID, being able to extend that targeting segment to other devices and platforms can be highly beneficial.
Supply
It’s crucial to collaborate with partners who have the right access to supply and direct connections with publishers. While targeting is essential, it’s equally important to have high-quality supply to drive performance.
Reaching consumers in a cookieless future
Whether you’re targeting on the demand or sell-side, it always starts with the consumer and who you’re trying to reach.
Significant changes in the consumer privacy landscape are impacting advertisers’ ability to access various signals emitted by consumers through their devices and browsers. Recent developments from Apple and Google have further amplified this situation.
Alternative IDs as a solution to signal loss
In response, we’re seeing the emergence of alternative IDs like UID2, Ramp ID, and ID5. OpenX supports these types of IDs and considers them crucial for audience buying in a privacy-centric cookie-less future.
We are still in the early stages of this evolution. While some of the IDs have good coverage, cookies will continue to be the primary targeting method as long as they remain available.
Nevertheless, we see alternative IDs as one of several solutions that will become increasingly important as third-party cookies disappear. Contextual buying will also emerge, and a set of solutions will come together to enable advertisers to keep finding their audience in a cookie-less world.
Overcoming signal loss with identity resolution
Looking ahead, as we continue to lose signals due to the evolving consumer privacy landscape, we will witness two things:
- Continued fragmentation
- A wide variety of identifiers
Content will continue to be available on various devices. We’re currently experiencing the emergence of connected TV, but who knows what other devices will surface over the next five to ten years. As cookies disappear, which have been the primary identifier, and alternative IDs are introduced, the wide variety of identifiers will create further fragmentation. This highlights the need for identity in the future.
Identity resolution at Experian matches fragmented identifiers to a single profile to create a unified, cross-channel view of your consumers. Our identity resolution solutions can help future-proof your marketing strategies.
How Experian and OpenX work together
Experian is a key player in OpenX’s OpenAudience solution and helps to power many of their data segments as well as their identity graph. While OpenX collaborates with a variety of providers and operates a fully interoperable platform, Experian remains valuable to the core technology within OpenX’s SSP.
“Experian powers a lot of the data segments and identity graph that OpenX has in our OpenAudience capabilities as part of our SSP.” – Mike Chowla, SVP, Product, OpenX
Watch the full Q&A
Visit our Ask the Expert content hub to watch Mike and Chris’s full conversation on sell-side targeting. In the Q&A, Mike and Chris also share their thoughts on the impact artificial intelligence (AI) will have on the AdTech industry and their go-to sources for staying up to date on all things AdTech.
About our experts

Mike Chowla, SVP, Product, OpenX
Mike Chowla is the SVP of Product at OpenX where he leads product development and innovation, from customer discovery and user research to the development, delivery, and support of a market-leading product suite. Chowla holds a BS in Engineering from the University of Southern California, and an MBA from The University of Pennsylvania.

Chris Feo, Chief Business Officer, Experian
As SVP of Sales & Partnerships, Chris has over a decade of experience across identity, data, and programmatic. Chris joined Experian during the Tapad acquisition in November 2020. He joined Tapad with less than 10 employees and has been part of the executive team through both the Telenor and Experian acquisitions. He’s an active advisor, board member, and investor within the AdTech ecosystem. Outside of work, he’s a die-hard golfer, frequent traveler, and husband to his wife, two dogs, and two goats!
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As I walked onto the buzzing streets of Cannes for the first time, my senses were immediately captivated by the energy that filled the air. I'd heard plenty about Cannes Lions, the globally revered International Festival of Creativity, but being in the midst of it all was an entirely different ballgame. 1. A visual extravaganza From the moment I woke up from my two-hour nap, (Seattle was a long way to travel to Cannes), I was awestruck by the grandeur of the festival. Usually known for its tranquil beauty, the city was alive and brimming with imagination. Massive installations, eye-catching billboards, and immersive media experiences were scattered over the two-kilometer stretch of La Croisette, transforming the city into a canvas of creativity. I saw firsthand how abstract concepts could be turned into palpable realities, especially those of Spotify, Yahoo!, and Stagwell's Sport Beach with their basketball court with stadium seating setup. 2. Nuggets of wisdom shared in panels The festival's days were jam-packed with thought leadership panels – each a masterclass in the ever-evolving universe of AdTech. Fortunately, as a member of the Experian team, I didn't have to travel far for unique panels; we hosted four panels throughout the week, and I was immersed in dynamic discussions about new trends, groundbreaking ideas, and the challenges ahead. One recurring theme that resonated with me was the intricacies of authentically connecting with consumers. Finding genuine human connections amidst digital chaos can be challenging in today's tech-driven world. These dialogues provided incredible insights into how we could maintain the delicate balance between personalization and privacy and effectively use artificial intelligence (AI) to enhance customer engagement without compromising the human essence in advertising. Watch our panels 3. Connect with your peers If Cannes Lions is known for anything apart from its creative inspiration, it's the unparalleled networking opportunities. The festival allowed me to interact with professionals from all corners of the world. Each exchange was not merely about exchanging contact details but building meaningful relationships. Will these first arcs lead to meaningful friendships? I sure hope so. 4. A comprehensive learning opportunity The most crucial aspect of the festival was the immense opportunity it offered for learning. I found myself constantly absorbing new information and insights from the panels, every conversation, and every chance meeting. 5. Juggle your time Effective time management was crucial for maximizing my Cannes experience, with many things happening concurrently. I would give myself a B- for this. During the day, when I had some downtime, I could have ventured to another panel, attended a networking event, or taken in a view of the city I didn't get. That's the biggest challenge, and the beauty of Cannes Lions is its unique blend of professional learning opportunities set against the backdrop of a picturesque seaside town, but how do you do it all? 6. Relish the experience My week at Cannes was filled with intense learning, insightful conversations, and eye-opening experiences, leaving me mentally drained and intellectually stimulated (I think those can happen concurrently). The festival left me with a renewed appreciation of why we do what we do in the AdTech industry: supporting the pursuit of creativity, the drive for innovation, and the desire to forge meaningful connections. Cannes Lions was more than just a festival – it was a week of stepping out of my comfort zone, gaining deep insights, and establishing relationships that I hope will last a lifetime. As I boarded my flight out of Nice, surrounded by adults with layers of event access bracelets, I was inspired and stacked with knowledge and ideas that will help drive meaningful marketing opportunities with our content and partnerships. The grandeur, the learning sessions, the networking, and the profound lessons exceeded all my expectations. My week at Cannes Lions was unique, intense, insightful, and unforgettable. It was an experience I can't wait to repeat! 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

It’s been one week since the highly anticipated Cannes Lions 2023 – the event of the year for advertising and creativity. We're thrilled to share our top four key takeaways from the event, showcasing what the industry will prioritize in the upcoming year. Signal loss At Cannes Lions 2023, experts underlined the detrimental effects of signal loss on advertising and emphasized the significance of having diverse channels. Discussions emphasized the importance of adapting paid media strategies to align with evolving consumer behaviors in order to remain relevant in the ever-changing landscape. Urgency in planning and avoiding being caught without a solid strategy was a common theme throughout the event. Alternative identifiers, like first-party data, were highlighted, as they prioritize privacy-centric approaches. Contextual advertising emerged as a key part of the solution, providing relevant ads that fit seamlessly into the user's experience. Collaboration Collaboration was a major theme at Cannes Lions 2023. Attendees explored topics such as maintaining privacy and identifying the right attributes for effective targeting. Clean rooms were discussed as a way to ensure privacy when sharing data, and highlighted partnerships as the key to unlocking interoperability within the advertising ecosystem. The discussions underscored the need for industry players to join forces and collaborate on solutions that benefit all stakeholders in the ecosystem. “What makes Cannes unique is that you have a lot of decision makers in the room at the same time. This leads to more efficiency in terms of coming up with goals and objectives and really getting to the heart of the key aspects for us to build partnerships.”alison omealia, vp, customer success, experian Personalization Personalization was a key topic of discussion at Cannes Lions 2023, with its growing significance in advertising taking center stage. The event emphasized the need to focus on serving up tailored content that resonates with individual consumers, cultivating brand affinity. The intersection of science and art was highlighted, emphasizing the role of data-driven insights and creativity in supporting frequency capping and delivering engaging content. Advertisers are adapting to cookie deprecation by shifting from cookie-based third-party targeting to first-party data solutions. This is due to the significant changes in the consumer privacy landscape, which have limited advertisers' access to signals emitted by consumers through their devices and browsers. As a result, alternative IDs like UID2, Ramp ID, and ID5 are emerging as viable options for advertisers to continue personalized targeting. Balancing AI and creativity at Cannes Lions 2023 Participants shared invaluable insights on how to strike the right balance between harnessing AI's capabilities and nurturing creativity to keep the human touch alive. The event emphasized the importance of understanding the boundaries of AI while utilizing tools that drive innovation and imagination. Attendees explored the dynamic roles that AI provides and discussed how it can help push the boundaries of their creativity while still keeping the human element intact. As technology continues to advance, so does the need for advertisers to adapt their approach and integrate AI in a way that enhances their creative output. Experian events at Cannes Lions 2023 We hosted a series of events that included a kick-off event and four panels. The activities were designed to provide attendees with valuable insights on various topics related to advertising and data privacy. Here's a recap of what we covered during the week. Experian’s Cannes Lions kick-off event We co-hosted a kick-off event on Sunday with Audigent. It was a successful event that brought people together to launch an important week in the AdTech industry and build connections with clients and prospects alike. Data on the sell-side Ongoing signal loss has marketers, agencies, and platforms tapping directly into the sell-side for high-quality audience and context. In this panel, industry experts from Truthset, Captify, Audigent, Newsweek, and PubMatic joined Experian to discuss the imminent disappearance of cookies and the need to adapt and future-proof data privacy strategies. The deprecation of third-party cookies presents an incredible opportunity to redefine data privacy practices and empower consumers. Our panelists emphasized the need to adapt and invest in alternative identifiers in order to thrive in a cookie-less future. Publishers were urged to create valuable content, engage in first-party activities, and consider the next generation of consumers who are growing up without traditional identifiers. The fragmented landscape calls for a variety of tactics and partnerships, while AI can provide opportunities to explore beyond deterministic identifiers, fostering creativity and innovation in advertising practices. Stacking the marketer's toolbox for success In partnership with Adweek Abroad in Cannes, industry leaders from FreeWheel, Tubi, and Instacart joined Experian to discuss opportunities for brands to unlock deeper, richer, and more scalable insights into current and potential customers. The panelists highlighted several key considerations, including building a robust first-party data strategy, ensuring accuracy in data quality partnerships, and establishing better-connected communications and relationships with consumers. Participants acknowledged the value of consumer data and urged advertisers to remain purpose-driven, always putting the viewer first. The freshness and recency of data were identified as critical factors for establishing quality connections with consumers and staying attuned to consumer trends. What does the future of identity hold? During this panel discussion, industry leaders from the IAB, MiQ, Cint, Direct Digital Holdings, and Tatari joined Experian to explore the future of identity. The panelists discussed the challenges cookie deprecation poses in programmatic advertising and the need for new identifiers and solutions. They also acknowledged the expanding media landscape and the importance of frequency capping and attribution measurement in a post-cookie era. Trends to watch for include the potential consolidation of identifiers and the movement of first-party data in-house by larger media companies. Panelists shared different views on cookie deprecation readiness and the overhype of AI in the industry. Streaming takes center stage OMG, Roku, AMC Networks, Paramount, and Disney joined Experian to discuss streaming TV as a fragmented and evolving landscape. The panelists debated whether it has become a performance channel and emphasized the need for client education, attribution, and optimizing performance metrics. They also discussed reaching audiences across different mediums with data interoperability, audience targeting, and reliable identity solutions. The panelists explored the emerging trend of AI, optimizing ad placement, refining targeting, streamlining creative approval, and enhancing ad breaks. “A lot of trends in AdTech are relevant to TV, but the most consistent trend has definitely been having a solid identity source throughout the whole lifecycle of a campaign within TV.”ali mack, sr. director, platforms, experian Watch our panels Let’s keep the conversation going The innovation and possibilities for signal loss, collaboration, personalization, and balancing AI and creativity are limitless, but understanding exactly how to get there is what can make all the difference. As we wrap up another successful week at Cannes Lions, let's use these conversations as an opportunity to advance together toward a more connected future — what trends are you most looking forward to? If you’d like to discuss any of these topics further, get in touch with us! Contact us Check out more Cannes content: 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 Maximize ad targeting with supply-side 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

Our next segment in our Ask the Expert series dives into the importance of data enrichment and its benefits across connected TV (CTV) advertising. Ask the Expert features a series of conversations with product experts where we focus on topics that matter the most in AdTech. In our latest segment, Natalia Irmin, Director of Strategic Data & Media Partnerships at a4 Advertising, joins us to chat with Experian's SVP of Sales & Partnerships, Chris Feo. a4 is an advanced advertising and data company that offers audience-based, multiscreen advertising solutions for local and national advertising businesses. In their conversation, Natalia and Chris review: The benefits of data enrichment First-party data enrichment across advertising Data enrichment in CTV advertisingHow Experian and a4 work together What is data enrichment? Data enrichment enhances first-party data sets using third-party data sources. This process involves merging first-party data from internal sources with data gathered from other internal sources or from external third-party sources. Examples of data that can be part of the enrichment process include: Demographic information Contextual signals Behavioral patterns Interests Purchase-intent The more you know about your customers, the better equipped you are to reach them where they are with the right message. By enriching your data, you can enhance your messaging, provide personalized offers, and establish a loyal customer base. First-party data enrichment across advertising Businesses are transitioning from cookie-based third-party targeting to first-party data enrichment solutions as a result of cookie deprecation. When data enrichment is paired with internal first-party data, you can generate a more holistic customer profile. a4 has a rich set of first-party data, based on the subscriptions to their services. a4 uses first-party data enrichment across advertising in two ways: Measure performance using their viewership dataAdvise their customers on where they should focus their advertising efforts based on the customer's viewing behavior a4 supports the enrichment of their customers' first-party data so they can get the most out of their insights. With Experian’s privacy-first approach, a4 can continue to rely on their first-party data while protecting personally identifiable information (PII). Data enrichment in CTV advertising CTV advertising refers to digital advertising that appears through a streaming service during a viewer’s video content, like a movie or TV show. CTV ad campaigns allow businesses to personalize their digital marketing messages while the viewer watches content on various platforms. CTV offers a highly measurable opportunity to increase brand awareness. Benefits of data enrichment in CTV advertising Data enrichment provides three key benefits that can enhance targeting, personalization, and campaign effectiveness in CTV advertising. Understand your target audience By using enriched data such as demographic information, viewing behavior, and interests, you can gain deeper insights into your target audience, refine your targeting strategies, and create highly personalized ad experiences. Data enrichment also enables better measurement and optimization of ad campaigns, maximizing ROI. Integrate enriched data with other marketing channels You can integrate enriched data into CTV with data from other marketing channels. This enables the creation of comprehensive and cohesive marketing strategies that provide consistent messaging and enhance cross-channel targeting. Enhance the value of ad inventory Data enrichment can also benefit content publishers and broadcasters by enhancing the value of ad inventory and providing more targeted and effective advertising opportunities. Enabling your marketers to target specific audiences will result in improved campaign performance. Through data enrichment, you can increase return on your ad spend and boost the value of your publisher’s ad inventory. a4 and Experian can help your business attract additional demand with audience enrichment. a4 uses Experian’s vast offering of audiences and combines it with Experian’s Graph. This data can later be used to activate across a4’s parent company, Altice’s owned and operated properties, as well as beyond Altice’s own footprint via premium publisher partners. How Experian and a4 work together a4 and Experian have a long-standing partnership that enables a4 to enhance its data. Through our Consumer View and Consumer Sync products, a4 can add audience attributes to its subscriber and viewer data to precisely pinpoint the audience that its clients are targeting. Experian helps a4 in building a comprehensive customer profile, which helps expand the customer base for a4's advertising clients. We form partnerships, like we do with Experian, to enhance our data further, so that we can combine the power of the viewership and exposure data for those other attributes that clients might need.” – Natalia Irmin, Director, Data & Strategic Partnerships, a4 Advertising Through Experian's audience attributes and Graph, a4 can assist advertisers in targeting audiences beyond their usual reach, creating a better user experience. a4 can personalize experiences and promotions to prioritize customers with a higher likelihood of making a purchase. By tailoring messages and promotions to individual customer preferences, businesses can improve their advertising efforts and deliver them through their preferred channels. Watch the full Q&A Visit our Ask the Expert content hub to watch Natalia and Chris's full conversation about data enrichment and its benefits across the advertising world. In the Q&A, Natalia and Chris also share their thoughts on the importance of first-party data enrichment, addressability, and measurability in CTV advertising. Watch now About our experts Natalia Irmin, Director, Strategic Data & Media Partnerships, a4 Advertising Natalia Irmin is the Director of Strategic Data & Media Partnerships for a4 Advertising. With over 10 years of experience working with data in the Defense, Finance, and Advertising industries, Natalia currently leads the a4 Strategic Partnerships team in the development of advanced data and media products in support of the organization’s media planning, buying, and advanced analytics business. Natalia holds an MBA from the NYU Stern School of Business and a Bachelor of Arts from Tel Aviv University in Israel. Chris Feo, SVP, Sales & Partnerships, Experian As SVP of Sales & Partnerships, Chris has over a decade of experience across identity, data, and programmatic. Chris joined Experian during the Tapad acquisition in November 2020. He joined Tapad with less than 10 employees and has been part of the executive team through both the Telenor and Experian acquisitions. He’s an active advisor, board member, and investor within the AdTech ecosystem. Outside of work, he’s a die-hard golfer, frequent traveler, and husband to his wife, two dogs, and two goats! Latest posts