
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!
Latest posts

Tapad, a part of Experian and the future of cookies Earlier this week, Google announced plans to create “.. a path towards making third-party cookies obsolete”; which will result in the phasing out of support for third-party cookies in its Chrome browser within two years. While there has been much discussion and debate on the future of the third-party cookie, an announcement from Google has been anticipated for some time. As many have said this week, the use of cookies and other identifiers has and will continue to evolve. What will never change is the value exchange between publishers and consumers that is enabled by relevant advertising. Notably, the need for independent companies to develop solutions that enable this value exchange has never been greater to ensure that publishers, consumers, and advertisers derive the most value from their relationship. We are well-positioned for the future. From the start, Tapad, a part of Experian has led with a consumer-first, privacy-centric approach to technology as the use and proliferation of devices and global privacy regulations continue to evolve. Over the past two years, Tapad, a part of Experian has gone through a technical overhaul. Calling on almost ten years of expertise in identity resolution, we have created a modern platform that is flexible in terms of identity input as well as output. Anticipated change in the identity landscape was the driver behind our architecture decisions and what enables us to be responsive to a dynamic market. Consumer behavior and device use continue to change, bringing additional digital IDs into the equation – namely across the mobile and CTV environments. Our technology, however, is not tied to any specific type of identifier, but rather is focused on associating disparate identifiers at the individual and household level. Where do we go from here? Google’s announcement has been characterized as a conversation starter, but we see it more as a call to action. With a timeline set, there is a need to converge on one or more solutions that can scale across the web. In a post cookie world, publishers and advertisers will continue to require ways to create fair marketplaces across platforms and devices. Further, the platforms that currently power the programmatic advertising ecosystem will need to be able to invest and differentiate to bring value to their customers. Scaled privacy-safe identity solutions will be needed not only for classic targeting, attribution, measurement, and frequency capping use cases but also to carry consumer preferences and consent. Tapad, a part of Experian will continue to play a leading role here. However, we are not going to do this alone. As solutions around Google’s Chrome browser evolve, we will continue to take a leadership position and will work with Google, key industry groups, partners and customers to meet current and future needs for an independent identity solution at scale. In the meantime, we will continue to support an independent ecosystem where consumers come first and privacy standards are a priority. It’s business as usual…for now. There will not be any changes to our graph products or services as a result of Google’s announcement in the near term. Any changes related to the Chrome third-party cookie will evolve and will no doubt be subject to significant industry participation and feed-back, indeed at the invitation of Google. We will proactively communicate any changes and product updates during this time period. We look forward to the opportunities resulting from these changes and ushering in a new era of identity resolution in digital advertising. Get started with The Tapad Graph For personalized consultation on the value and benefits of The Tapad Graph for your business, email Sales@tapad.com today!

Tapad's integration with Knorex's XPO™ platform will complement cross-channel optimization capabilities for brands and agencies in the U.S. and APAC markets NEW YORK and SINGAPORE, Dec. 10, 2019 /PRNewswire/ — Tapad, part of Experian and a global leader in digital identity resolution, has partnered with Knorex, a leading provider of digital performance marketing. Knorex's self-service online advertising platform, Knorex XPO™, enables marketers to advertise globally in real-time across different media channels, formats, platforms and devices. Tapad's global, privacy-safe digital cross-device solution, The Tapad Graph, will compliment Knorex XPO™'s own device data set for enhanced marketing capabilities. For Knorex, the integration enables their brand direct and agency customers to gain a more accurate understanding of consumers across devices to reduce campaign inefficiencies and duplication, and to effectively manage frequency capping and attribution. Abhishek Kumar, VP of Engineering at Knorex commented, "Today's digital consumer is raising the bar for marketers. With increasing marketing complexities and consumer device usage, this integration enables marketers to understand the consumer decision journey with heightened ease. Our combined offering will empower agencies in the APAC and US markets, providing an improved marketing solution that will help to streamline their efforts." Abhay Doshi, Head of APAC at Tapad added: "The Tapad Graph, when integrated with the Knorex XPO platform, should not only help U.S. and APAC marketers optimize campaign performance through cross device marketing – but also increase the opportunity for brands to reach out to their target customers within a desired time." To learn more about Tapad and our digital identity resolution capabilities, visit https://www.experian.com/marketing/consumer-sync About TapadTapad, Inc. is a global leader in digital identity resolution. The Tapad Graph and its related solutions provide a transparent, privacy-safe approach connecting brands to consumers through their devices globally. Tapad is recognized across the industry for its product innovation, workplace culture, and talent, and has earned numerous awards including One World Identity's 2019 Top 100 Influencers in Identity Award. Headquartered in New York, Tapad also has offices in Chicago, London, Oslo, Singapore, and Tokyo. About KnorexKnorex provides programmatic advertising products and technologies to advertising buyers worldwide. With its cloud-based online advertising platform, Knorex XPO™ enables ad buyers to self-serve and advertise real-time across the globe regardless of the media channels (social, search, OTT/CTV, video, web/mobile etc.), ad formats (display, native, search, social, video etc) and devices (desktop, laptop, smartphones and tablets) to deliver personalized marketing messages to the target audience in an automated way, powered by machine learning/AI. Underpinned by a multi-layered data-driven approach, XPO simplifies the execution and optimization of marketing campaigns, while delivering measurable and attributable performance. Contact us today!

Tapad, now part of Experian, technology now powers Lifesight's real world intelligence platform with cross-device and reach expansion in the Asia Pacific Region SINGAPORE, Nov. 20, 2019 /PRNewswire/ — Tapad, part of Experian and a global leader in digital identity resolution, today announced a new partnership with Lifesight, a leading provider of real world intelligence for advertisers in the Asia Pacific region (APAC). With the combined offering of The Tapad Graph, Tapad's global, privacy-safe digital cross-device solution, and Lifesight's real world intelligence platform, brands and agencies across APAC can benefit from better consumer targeting, expanded reach for targeted audiences and web-to-mobile footfall attribution. Through this multi-layered offering, Lifesight's brand and agency partners can access an omnichannel view of consumers' paths to purchase, thereby enabling them to increase the reach, measurability and ROI of their advertising campaigns. Rohit Maheswaran, Co-founder of Lifesight commented, "The consumer journey is getting increasingly more complex with ever changing digital and physical world behaviours, making it difficult for marketers to make strategic marketing spend decisions. That's why it's our mission at Lifesight to empower the brands and agencies within the APAC market to achieve better targeting and measurement capabilities, and our partnership with Tapad will help further this cause." Abhay Doshi, Head of APAC at Tapad added, "The Tapad Graph, which enables a unified view of consumers across their multiple digital devices, has a reach of 1 billion devices across the APAC market today. Paired with Lifesight's consumer insights of more than 500 million unique devices, this valuable partnership will offer the market extended consumer reach and prove beneficial to brands and advertisers across APAC who have historically struggled with resolving attribution." To learn more about Tapad and our digital identity resolution capabilities, visit www.experian.com/marketing/consumer-sync About Tapad Tapad, Inc. is a global leader in digital identity resolution. The Tapad Graph, and its related solutions, provide a transparent, privacy-safe approach connecting brands to consumers through their devices globally. Our one-of-a-kind Graph Select offering enables marketers the flexibility and freedom of choice to correlate devices to varied objectives, driving campaign effectiveness and business results. Tapad is recognized across the industry for its product innovation, workplace culture and talent, and has earned numerous awards including One World Identity's 2019 Top 100 Influencers in Identity Award. Headquartered in New York, Tapad also has offices in Chicago, London, Oslo, Singapore and Tokyo. About Lifesight: Lifesight is Asia's leading real world intelligence company that helps marketers understand, target, and measure consumers based on their real world behaviour. Lifesight's robust platform and data solutions power business decisioning, audience activation, footfall measurement, and in-depth location analytics for leading brands and enterprises. The company is headquartered in Singapore with a rapidly expanding footprint in the Asia Pacific region operating in India, Malaysia, Indonesia, UAE, Saudi Arabia, Thailand, Philippines, Vietnam, Japan, Australia and New Zealand. To learn more, visit https://www.lifesight.io/ Contact us today!