what's adtech in everything? a friend of mine is a salesman for billboard ads. people see it every day if they happens to drive by one of the billboard ad that he sold. does that count as adtech?

Maybe. Does the billboard get in your pocket and follow you around, keeping track of your location? Does it parse your email for metadata? Does it insert itself in between your news feed because you happen to be in its target group? Does it ask you to accept its Terms and Conditions of Billboard Use and its Privacy Policy?

Nope, it just blinds me at night whilst trying to get me to hire an injury lawyer

Other than people making money off of them, I know of no one who is excited by the existence of billboards. In fact, they are usually a source of complaints. (There was some use for them pre-cell phones to find restaurants/gas/lodging during road trips.)

But even there, most people object to the personalized ads and the tech that measures it. People don't seem upset about ads in print magazines (that are tied only into the consumed content) or ads in podcasts.

Billboards are actually not even legal in all 50 states.

> "adtech in everything"

Meaning what? This is technology to deliver advertising.

Where ads are placed has nothing to do with this story, and hasn't changed because of it.