Out-of-home (OOH) advertising, often referred to as "DOOH" (digital out-of-home), involves marketing strategies that target consumers when they are outside of their homes. This can include digital billboards, transit ads, street furniture ads, and more. DOOH specifically uses digital displays to deliver dynamic, eye-catching content that can be updated remotely and targeted based on audience demographics and behaviors, making it a versatile and impactful form of advertising in urban and high-traffic areas.