Contextual Advertising and Targeting Insights | Peer39 Blog

Peer39 Interview Series: Doug McLennan, Sr. Director of Product Management, Experian Marketing Services

Written by Alynn Beyder | Aug 17, 2026, 3:36:43 PM

 

Experian Marketing Services has been a long-standing partner within Peer39's Contextual Data Marketplace® with over 500 pre-bid segments available across the US and EMEA. Experian Marketing Services empower brands to better understand, connect and engage with their target audience through deep consumer insights. As signal loss accelerates and privacy expectations rise, we take a closer look at bringing Experian's trusted audience intelligence into Peer39 Contextual Data Marketplace—and why the future of targeting is about flexibility, not either/or.

 

For buyers who know Experian primarily as an identity and audience leader, what does it mean for Experian segments to be available pre-bid inside Peer39's Contextual Data Marketplace®?

Doug McLennan: It means buyers have another way to apply Experian's consumer intelligence in places where they are already planning and buying media. Marketers do not all activate in the same way, and different campaigns call for different combinations of identity, audience, context, and scale. By making Experian segments available through Peer39's Contextual Data Marketplace®, we are giving buyers a privacy-forward path to bring audience intelligence into contextual, pre-bid workflows. 

The important point is choice. This does not replace other ways buyers can work with Experian data. It expands the way they can use it, especially for teams that want the confidence of Experian's data foundation while leaning into contextual activation.

Why was Peer39 the right partner to bring Experian's audience data to market in a cookieless, privacy-safe way? 

We began working with Peer39 several years ago to make ZIP-level demographic and propensity data available their Contextual Data Marketplace®. That relationship evolved as buyers increasingly turned to contextual solutions that are less dependent on cookies and more sophisticated than keyword-based approaches of the past. 

Peer39 is an excellent fit because buyers already associated Peer39 with contextual targeting, brand suitability, and pre-bid decisioning. We wanted to work with a partner that could help bring Experian audiences into a privacy-forward contextual workflow in a way buyers would understand and be able to use. 

The goal was not simply to put Experian data in another marketplace. It was to give marketers a way to apply trusted audience intelligence in contextual environments where individual-level identifiers may not be available, appropriate, or preferred. Experian brings the data foundation, and Peer39 brings the contextual activation environment. Together, that gives buyers another flexible path to reach relevant audiences as the ecosystem continues to evolve. 

What gap in the contextual and audience landscape does this partnership solve for advertisers and agencies today?

It helps bridge the gap between audience and intelligence and media context. Advertisers have often had to manage audience and contextual strategies as separate work streams, which can create fragmentation and make it harder to keep a consistent audience definition from planning to activation. 

This collaboration helps connect those pieces. A buyer can start with a trusted audience and apply it to the contextual marketplace, bringing greater continuity in who they want to reach and where the message appears. 

How does activating Experian through Peer39 differ from how buyers may have used Experian Audiences in the past?

The core value of Experian Audiences is the same: trusted and proprietary data, accurate consumer insight, and privacy-forward activation. What changes is access and workflow. 

Activating Experian through Peer39 gives buyers a way to select and apply Experian Audiences inside a contextual marketplace and then use that path across campaigns, rather than recreating similar work in separate tools. I would think of it as adding another interoperable activation path, not asking buyers to abandon the ones they already rely on.

With signal loss accelerating, how does geo-indexed, household-data give advertisers a more durable foundation than cookie- or ID-based targeting?

I would be careful not to paint every identifier with the same brush. Identity still matters, and durable identity remains central to effective marketing. The issue is that some signals, and transient identifiers, have become more volatile, and marketers need more options that can perform as signal availability changes. 

Geo-indexed and household-level approaches give advertisers another way to build reach and relevance using signals that are more stable and better suited to privacy-conscious activation. There is a trade-off: when you move from individual-level activation to household, geography, or context-informed activation, you may give up some individual-level fidelity. But for many campaign objectives, that trade-off is worth it because it can create more scale, more durability, and a privacy-conscious path to reach the right audiences. 

The value is not that this replaces identity. It gives buyers a complementary option, allowing them to choose the right level of precision, scale, and privacy for the campaign.

Many marketers worry that privacy-safe means less precise. How does Experian's approach prove that's a false trade-off?

I would not say there is never a trade-off. If precision means identifying an individual in every impression opportunity, then privacy-first approaches like geo-indexed or contextual activation can be less precise than one-to-one addressable targeting. 

The false assumption is that privacy-safe means generic, low quality, or ineffective. That is not the case. Experian starts with high-quality consumer and household intelligence, including real-world signals, and then adapts that intelligence to the activation environment. Sometimes that means addressable identity. Sometimes it means geography-informed, or contextual activation. 

The goal is to help marketers make the right trade-off for the objective. If they need maximum addressability, one path may make sense. If they need broader reach, privacy-conscious activation, or resilience against signals loss, another path may be the better move. The important thing is that they are not choosing between privacy and performance in the abstract; they are choosing the right level of precision, scale, and responsibility for the campaign.  

If a buyer is sitting on flat performance with their current audience strategy, what's the first Experian segment you'd recommend they test?

I would not recommend one universal segment because the right starting point depends on the campaign objective. If performance is flat, I would first look at whether the buyer is using enough of the available audience signal. Often the opportunity is not one segment; it is combining the right signals. 

For example, a buyer may start with demographic or household decision-maker attributes, then layer in purchase behavior, ownership, life stage, or purchase-intent signals specific to the category. That combination usually gives a stronger test than a broad demographic segment on its own because it ties the audience definition back to the business goal. 

Looking out over the next 12-18 months, how do you see the role of privacy-first audience data evolving inside the programmatic ecosystem?

Regulation, AI and agentic advancements, platform changes, and signal loss are not one-time disruptions; they are continuing conditions of the market. Buyers need approaches that can keep working as those conditions change. 

Savvy marketers are not waiting until a signal disappears to test alternatives. They are building activation strategies now, learning where they perform, and creating playbooks they can scale. Over the next 12 to 18 months, I think privacy-forward audience data will become a parallel path for brands that need relevance but must be thoughtful about when and how they use one-to-one targeting. The strongest strategies will bring together durable identity, high-quality data, contextual relevance, and strong governance, with AI helping marketers derive useful signals where direct identity is limited, unavailable, or inappropriate for the campaign. 

Final word – if there's one thing you want every buyer reading this to take away about Experian in the Peer39 Contextual Data Marketplace, what is it?

The takeaway is that Experian is meeting buyers where they are. We bring trusted, high-fidelity audience intelligence, and through Peer39 we are making that intelligence available in a contextual marketplace that supports privacy-conscious activation. 

For buyers, this is about flexibility and confidence. Experian audiences in Peer39's Contextual Data Marketplace give marketers another way to apply trusted audience intelligence when contextual relevance, scale, and privacy-conscious activation are priorities. It is not a replacement for identity-based activation; it is another option in the toolkit, and the right choice depends on the campaign objective.

 

For anyone interested in learning more about Experian's segments, you can explore and activate them directly in-platform, within your DSP of choice, or reach out to your Peer39 Account Manager to get started.