Quick answer: You can measure OOH without pretending it’s a click channel. Use a stack: baseline tracking, geo tests, search lift, store visits, and incrementality methods that match the real-world nature of OOH.
OOH drives outcomes—just not like a banner ad
OOH influences behavior in a realistic sequence: someone sees a message in public, then they do what people actually do when curiosity or intent is triggered—they search, they type a URL, they open an app, or they visit a store.
The goal isn’t to force OOH into last-click reporting. The goal is to measure the lift OOH creates across signals that naturally follow public exposure.
What OOH typically influences
- Branded search volume (and sometimes category search)
- Direct traffic and brand-driven sessions
- App installs (especially with strong prompts and simple store links)
- Store visits / footfall
- Conversion lift in exposed geographies
A practical 5-layer measurement stack
1) “Always-on” baseline tracking
Before you run anything, set a stable baseline so you can see what truly moved. Track weekly:
- Branded search (and top brand keywords)
- Direct traffic + branded sessions
- Conversion rate (site or app)
- Geo breakdown by market (DMA/city/ZIP where possible)
2) Vanity URLs (only when they’re short)
Vanity URLs can help, but only in environments where people can reasonably act. Use them when dwell time exists: transit shelters, retail, street furniture, venues, queues.
Avoid long URLs everywhere—and avoid action-heavy mechanics on highways. Speed environments reward recognition, not interaction.
3) Geo lift tests (the cleanest measurement option)
If you can design one measurement method, choose this. Split into:
- Exposed zones: corridors/ZIPs where OOH runs
- Control zones: similar areas where OOH does not run
Measure differential lift over time. That’s how you get closer to causality instead of correlation.
4) Store visit measurement
If you have internal location signals or partner tooling, compare behavior for exposed vs. non-exposed groups:
- Visits in exposed corridors vs. control
- Time-of-day alignment with delivery (dayparts you bought)
- Frequency effects (repeat exposure → higher visit probability)
5) Incrementality mindset
The best question isn’t “How many clicks did the billboard get?” The best question is: What changed because OOH existed?
This is where you combine layers: baseline + geo test + search lift + store visits, then summarize the incremental story.
Reporting that stakeholders actually accept
The strongest OOH report is simple and defensible:
- What we ran: where + when + formats + dayparts
- What moved: search lift, direct traffic, store visits, conversion lift by geo
- What it suggests: optimize corridors, dayparts, and creative (not just “buy more”)
Comments
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