 Benefits of DOOH advertising likely to see the biggest influences are added variety and increased opportunity for campaign relevance MIAMI BEACH, FL ACCESSWIRE September 8, 2021 In 2019, Digital Out of Home Advertising DOOH accounted for approximately 28.3 of OOH ad spend, however 48 of advertising executives believe it will account for over 33 by 2025, according to new research from Alfi NASDAQ:ALF, an AI enterprise SaaS advertising platform. Furthermore, one in twenty ad executives think OOH advertising spend will account for over 40. 