Here at Matrix Media Services, we specialize in the oldest media on earth, out-of-home advertising. There is a variety of outdoor media that make up the OOH industry. Traditionally, outdoor advertising encompassed anything outdoors. For the most part, this generalization remains true. The only real difference between today’s out-of-home market and the outdoor market that existed ten years ago is the addition of OOH guerrilla advertising (Chalk Art, Wild Postings, Street Decals, etc.). Traditional outdoor includes a variety of billboards; bulletins, 30-sheet posters/ eco posters, 8-sheet posters, wallscapes and spectaculars.