Out of Home (OOH) advertising refers to any form of advertising that reaches consumers while they are outside their homes or workplaces. OOH advertising typically includes billboards, posters, digital displays, and other forms of outdoor media that are placed in high-traffic areas such as highways, airports, shopping centers, and public transit stations.

OOH advertising is a popular marketing channel because it can reach a wide audience in a targeted geographic location. Unlike online or TV advertising, which can be easily skipped or ignored, OOH advertising is often placed in areas where people are likely to see it and can't avoid it. This makes it an effective way to build brand awareness, promote products or services, and drive customer engagement.

With the rise of digital technology, OOH advertising has evolved to include digital displays that can be updated in real-time and targeted to specific audiences based on factors such as location, time of day, and weather conditions. This has opened up new possibilities for advertisers to create dynamic and interactive campaigns that engage consumers in a more personalized and relevant way.

Overall, OOH advertising remains a popular and effective marketing channel for brands looking to reach consumers while they are on the go and in the public eye.