A neighborhood bakery can pay a few dollars a day to show an Instagram ad to people within a few…

When a furnace dies on a January night, the homeowner searches “furnace repair near me” and calls one of the…

A reader opens a news site. Before the page finishes loading, software has already held an auction for the banner…

A postcard lands in a mailbox. A sales rep calls a plant manager who has never heard of the company….