What changed
Out-of-home used to mean a twelve-month contract on one board negotiated with a sales rep. Digital screens changed the transaction: gas pumps, gyms, transit shelters, retail interiors, medical waiting rooms and roadside boards are now sold programmatically, by impression, with geographic and daypart targeting.
The four-figure minimums and annual commitments largely went with it.
What it does that nothing else does
It makes a small business look permanent. A name on a screen in a place people physically go reads as scale and stability in a way no feed placement achieves — which matters most when you are asking a stranger for a large purchase.
It is also unskippable and unblockable, and it reaches people during the parts of the day when they are not on a device at all.
How to buy it sensibly
Screens near where your customers already are, not near where you are. Gyms and pumps for consumer services, medical waiting rooms for adjacent health categories, retail interiors near complementary purchases.
Pair it with search. The pattern that works is presence on screens plus capture on search — the screen creates the recall, the search catches it. Run them together and watch brand search volume, which is where the effect shows first.
Creative constraints
Six words, one image, name and one line. People are walking past at a distance, glancing for two seconds, often without sound.
No phone numbers, no URLs, no paragraphs. If it needs to be read, it will not be.