For years, out-of-home (OOH) advertisingwas considered a less measurable medium than its digital counterparts. While the impact of billboards, transit ads and digital screens on brand awareness was undeniable, quantifying their precise contribution to marketing goals seemed impossible. But the landscape is rapidly changing. We're entering an era where OOH is becoming increasingly measurable, offering advertisers a clearer understanding of its value for marketing and the marketing mix.