Lemma Integral Solves OOH's Biggest Problem: Measurement

For years, out-of-home advertising lived in a frustrating blind spot. Brands knew billboards, transit ads, and screens in shopping malls reached real people. Proving it was another matter entirely.

That problem now has a direct answer. Lemma, an adtech company, has launched Lemma Integral, a platform designed to connect outdoor advertising to measurable digital results for the first time in a single system.

Why This Has Taken So Long

The gap between seeing an outdoor ad and clicking a website has always been hard to track. A person spots a billboard on their morning commute, later searches for the product on their phone, and buys it that evening. Traditional tools had no way to credit the billboard.

That measurement gap has had real consequences. According to research, 77% of marketers have ruled out outdoor advertising specifically because they believed it could not be measured. Another 70% said they would consider it if measurement tools existed. Meanwhile, only 25% of marketing leaders say they have high visibility into ROI across their advertising channels, even as 88% of them are now personally responsible for revenue results.

Outdoor advertising was easy to cut because it was hard to defend.

What Lemma Integral Actually Does

The platform tracks a single audience journey from an outdoor impression all the way through to digital activity, including connected TV (CTV), mobile, and the web. A brand running a campaign on digital screens in a city can now see how that outdoor exposure influences what people do online afterward.

Lemma describes this as bridging the traditional barrier between upper-funnel brand building (reaching a wide audience) and lower-funnel performance advertising (getting people to act). According to the company, Lemma Integral gives brands and agencies the ability to plan, track, retarget, and optimize outdoor campaigns with the same level of precision previously available only in digital channels.

"With Lemma Integral, we're enabling marketers to move beyond fragmented campaigns and orchestrate a truly full-funnel strategy where OOH connects seamlessly with CTV, mobile, and the web," said Gulab Patil, Founder and CEO at Lemma. "It's about making every OOH impression measurable and impactful."

Patil also noted that AI-driven advertising depends heavily on data, and programmatic outdoor advertising is increasingly a generator of it. "AI runs on data, and programmatic DOOH generates it, making OOH a critical layer for brands building the next generation of AI-driven advertising."

Why This Matters for APAC Marketing Leaders

The timing is significant. The Asia Pacific digital outdoor advertising market is growing rapidly, expanding from US$21.64 billion in 2025 to an estimated US$23.94 billion in 2026. Programmatic outdoor advertising is accelerating fast, with growth rates of 65% annually in Australia and over 100% annually in New Zealand.

The channel also delivers strong returns when properly measured. Independent research shows OOH generates a marginal ROI of US$7.58 per incremental dollar invested, outperforming print, radio, and linear TV. The problem was never the medium. It was the inability to show finance teams the evidence.

Research from OAAA also shows that when brands run brand and performance advertising simultaneously, they see a 90% lift in performance metrics. A brand running a combined campaign is no longer choosing between awareness and conversion. It is pursuing both at once, and the data shows that combination delivers outsized results.

The Bigger Shift

Lemma Integral's launch reflects a broader shift across the industry. The tools to track what happens after someone sees an outdoor ad have been building for years, from mobile device signals to audience data partnerships. What has been missing is a single platform that pulls all of it together into a coherent view.

For marketing leaders in Asia who have long wanted to include outdoor advertising in their mix but struggled to defend the spend, this is the kind of structural change that reopens the conversation.