
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

Q&A with John Fetto, Senior Analyst, Marketing & Research Earlier this year, Experian Marketing Services released our Cross-Device Video Analysis. The analysis has generated such strong and sustained interest from marketers and the media, we wanted to explore the subject further. The following is an exchange with the report’s lead author John Fetto who answers some common questions that we’ve received since the analysis was published. Q: In the Cross-Device Video Analysis, you report that consumers are “cutting the cord” on pay cable and satellite television services. Can you elaborate on this trend? What’s driving it? According to our research at Experian Marketing Services, U.S. consumers are increasingly likely to have high speed Internet at home but no cable or satellite TV subscription. There are two primary consumer trends driving this: 1) Households that never subscribed to a pay TV service are now upgrading to broadband Internet; 2) Households that previously subscribed to both pay TV service and broadband Internet that have since cancelled the cable or satellite TV subscription. While the vast majority of U.S. households pay for either cable or satellite TV, an estimated 15.1 million (or 12.9 percent of households) do not. That’s up from 13.5 million households (11.9 percent) who didn’t pay for TV in 2009. At the same time, the share of broadband households is also rising. Today, 72.7 million homes (61.4 percent) have broadband Internet, up from 65.0 million homes (56.9 percent) in 2009. As Americans’ Internet connection at home is increasingly fast enough to deliver high quality video content through sites like YouTube, Netflix, Hulu and the like, as well as the ability to consume that online video content across an array of devices ranging from Internet-connected televisions to smartphones and tablets to computers, they are increasingly questioning whether they need to continue paying for TV. And more and more consumers are deciding to cut the cord. Q: With more consumers cutting the cord, how are they consuming video content? While the most commonly used device to consume online video is the smartphone — used by 24 percent of adults during a typical week to watch online video, according to our research — “cord cutters” are primarily using Internet-connected TV to consume online video. In fact, an adult who watches online video on their TV is 3.2 times more likely than the average adult to be a cord-cutter. This means that the Internet-connected TV market is critical in predicting the future of the cord-cutting consumer. As existing devices like Apple TV, Chromecast and Roku are upgraded and new devices like Amazon Fire TV are introduced to the market, consumers will have more and more options to consume online video without sacrificing quality or screen size. As a result, more consumers will be reconsidering whether they need to continue paying for TV. Q: What percent of consumers get their television programming from various sources including cable, satellite, online streaming and free over the air TV? Combined, 87.1 percent of U.S. households subscribe to either cable or satellite TV. While Experian Marketing Services doesn’t specifically measure the percent of Americans who watch TV through an over the air feed (OTA) we know that among those who do not subscribe to cable or satellite, the vast majority (77 percent) still watch TV. And while it’s possible that some are viewing TV from a cable or satellite feed away from home, the most likely source of their TV content would be from OTA sources. That means that at least 10 percent of American adults are watching some TV through an OTA feed. In addition, 48 percent of all adults watch online video each week through a variety of devices. Those who don’t pay for TV are 12 percent more likely than those who have cable or satellite TV to watch online video (54 percent vs 48 percent). Q: The cord-cutting trend has many implications for the cable and satellite companies, but what do consumer-facing marketers and advertisers need to know about this trend? The growth in online video viewing creates many opportunities for marketers. Online audiences can be more easily targeted and served up advertising that is more relevant, responsive and measureable. Marketers can also be more confident that their online ad was actually seen, given that viewers are typically unable to skip ads. And while CPMs for online video ads may generally be lower than those of TV, marketers can use that savings to negotiate costs based on clicks or transactions rather than impressions, giving them a better picture into audience interest and insights to inform their budget allocation. Millennials are the most device “agnostic,” with more than one-third saying they don’t mind watching video on a portable device even if it means a smaller screen. That’s more than double the rate of those ages 35 and older. This decentralized viewing can create headaches for marketers who need to start a relationship with Millennials during this stage of their lives when they’re most open to trying out new brands and have yet to settle down. On the plus side, marketers who do manage to reach this audience will find them much more open to advertising than average. In fact, Millennials are more than four times more likely to say that video ads that they view on their cell phone are useful. So while the challenge is big, so is the potential reward. Download the full analysis to learn more about: Cross-device video behaviors to optimize media mix approach The impact of the growing trend in cord-cutters The rising influence of Internet-connected TV How to get more impact from video content

School may be out for the summer, but this is the perfect time for marketers to begin back-to-school planning. Follow these five simple tips and be on your way to back-to-school success. Searchers are actively seeking out ideas around clothes, hairstyles and dorm room décor as they prepare for the school year to start. Leverage sites like Pinterest to promote back to school merchandise and content. Don’t forget to include DIY and customization options as these appeal to today’s students. Don’t underestimate the influence of moms and college students. These consumers are more likely to actively search for the best deals online so test using deal-seeking terms like “free” and “sales” in promotional campaigns. In 2013, Marketers experienced a 35 percent lift in unique clicks when they used the word ‘college’ in the subject line. This year, try targeting specific ages for back-to-school by including terms like “college” and kids” in the subject line. Timing of back-to-school campaigns matters. While August is the key month for back-to-school campaigns, there may be more opportunity to mail additional campaigns for school supplies in July, and clothing and accessories in early September. Don’t forget to personalize! Last year, we saw a 44 percent increase in unique open rates for emails that contained personalization in the subject line. These tactics should be included in a strong back-to-school mailing program. For more information on back-to-school planning, download the 5 Lessons for Back-to-school Marketers in 2014 report.

Experian Marketing Services conducted an analysis into the attitudes, language preferences, spending habits and media behaviors of Hispanic Consumers, some of which were featured in the 2014 Hispanic Market Overview presented by López Negrete Communications. This post highlights findings from that analysis, which focus on Hispanic consumers’ adoption and use of smartphones. Hispanic consumers, who today account for 15 percent of the total U.S. adult population and 22 percent of Millennials, represent an ideal audience for mobile engagement and mobile advertising. While cell phone ownership rates among Hispanic and non-Hispanic adults are equal, Hispanics are more likely to own a smartphone and use it as their primary device to connect to the Internet. According to the latest estimates from Experian Marketing Services, 63 percent of Hispanic adults own a smartphone versus 60 percent of non-Hispanics. That’s up from 52 percent and 51 percent, respectively, since 2012. Among smartphone owners, Hispanics are 17 percent more likely than non-Hispanics to say that they access the Internet more through their phone than through a computer. In fact, 45 percent of Hispanic smartphone owners are mobile-dominant when it comes to going online compared with 38 percent of non-Hispanics. Marketers courting the influential Hispanic consumer must consider this fact and take a mobile-first approach to ensure that online marketing efforts, including everything from email to websites to e-commerce, are designed to engage the customer as effectively on a mobile device as on a computer. Even traditional marketing tactics such as television ads should reflect the growing likelihood that Hispanics have a smartphone either nearby or physically in their hand and are ready to engage. In fact, 37 percent of all Hispanic adults say that they often use their cell phone while watching television compared with 29 percent of non-Hispanics. Among smartphone owners, the share of Hispanics who use their phone while watching television shoots up to 50 percent versus 42 percent of non-Hispanics. Millennial smartphone owners are among the most likely to be splitting their attention between the big and small screen with 61 percent of Hispanic Millennials and 58 percent of non-Hispanic Millennials doing so. Knowing what specific mobile activities Hispanics are engaging in is critical for marketers in identifying the best tactics for reaching them via mobile. The chart below shows that Hispanics engage in most smartphone activities at above average rates, but they are much more likely than non-Hispanics to IM/chat on their phone. As a result they are slightly less likely than non-Hispanics to email from their phone, though the vast majority of Hispanic smartphone owners still use mobile email. Other activities that marketers will find Hispanics engaging in at above average rates include watching videos, using mobile GPS and listening to music. Learn more about how Experian Marketing Services can help your organization more effectively target, reach and engage today’s Hispanic consumer.