The document provides insights into the out-of-home (OOH) advertising landscape, focusing on consumer behavior, digital advancements, and market trends from 1999 to 2015. It highlights the growth of digital OOH revenue and the significant spending categories and advertisers, as well as the competitive landscape of major media companies like JCDecaux and Clear Channel. The report underscores the importance of data-driven targeting and the evolution of advertising through technology and consumer interactivity.