Despite being the oldest form of marketing, Out-of-home (OOH) advertising remains one of the best ways to reach new customers. Now accounting for 6% of the global spend on advertising, OOH advertising today is a $29 billion industry. For every dollar that you spend on OOH advertising, you can look forward to receiving approximately $5.97 in ROI revenue. This significant return makes OOH 40% more effective than digital marketing and 14% more impactful than print adverts. With the reach of print steadily declining year on year and consumer desensitization to online adverts, companies of all sizes are using OOH marketing in new and innovative ways to grow business.