Lemma Integral Closes Attribution Gap for Digital Out-of-Home Ads

Lemma, an adtech company operating across North America and Asia-Pacific, has launched Lemma Integral, an AI-powered platform designed to link out-of-home advertising exposure with measurable digital actions. The product aims to close the attribution gap that has kept outdoor advertising outside performance marketing strategies for decades.

From Impressions to Outcomes

Lemma Integral connects digital out-of-home (DOOH) campaigns with downstream activity across mobile, connected television, and the web. The platform consolidates planning, tracking, retargeting, and reporting into a single dashboard under what the company calls an "Outdoor to Outcome" model.

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The system is built on the Lemma Audience Graph, which uses non-personal persistent identifiers and data from multiple providers to build audience segments. These segments are identified based on movement patterns and behavioral signals, then tracked across other media channels after exposure to outdoor inventory.

Gulab Patil, founder and chief executive officer of Lemma, said the company sees outdoor advertising as part of a broader cross-channel system rather than a standalone branding tool.

"With Lemma Integral, we are enabling marketers to move beyond fragmented campaigns and orchestrate a truly full-funnel strategy where OOH connects seamlessly with CTV, mobile, and the web," Patil said. "AI runs on data, and programmatic DOOH generates it, making OOH a critical layer for brands building the next generation of AI-driven advertising."

Addressing a Long-Standing Gap

Outdoor advertising has historically been measured through estimated reach, impressions, and footfall data. Brands have used the channel for visibility while relying on search, social, and display formats for direct response and attribution.

Lemma Integral attempts to change that by creating a closed loop between physical screen exposure and digital conversion. The platform gives advertisers access to 3.5 million digital out-of-home screens globally, including more than 20,000 screens across the United Kingdom through an integration with DAX.

Early campaign data cited by Lemma, which has not been independently verified, showed app installs 1.5 times above plan, video through rates twice the industry average, and return on ad spend three times higher than regular campaigns.

Andrew Fox, chief executive officer of SuperJeweler.com and Hansa USA, described the practical impact in a client campaign.

"Brands today need media strategies that are both impactful and accountable," Fox said. "With Lemma Integral, we were able to integrate data-driven DOOH into our media mix and connect it seamlessly with digital channels. This helped us shorten the path from exposure to transaction and deliver significantly stronger returns."

Wider Industry Context

The launch reflects a broader effort across the outdoor advertising sector to make programmatic DOOH comparable to online video, mobile, and connected television in terms of audience data and performance accountability.

Outdoor media owners and adtech suppliers have been working to standardize DOOH buying alongside digital channels. Lemma's expansion via DAX in the UK is part of that push to build scale across multiple regions.

For marketing leaders in Asia-Pacific, where outdoor advertising accounts for a significant share of media budgets, the ability to tie billboard exposure to digital outcomes could influence how outdoor inventory is evaluated against digital-first channels. Lemma Integral is currently available to clients across North America, Asia-Pacific, and other regions.