Due to globalization, winning your targeted market becomes tougher and tougher.  Companies who wants to remain competetive are on the lookout for the best way to reach a wider audience to promote their products.  Hence Outdoor Ads was born.  Although outdoor ads are not new in the world of advertisement.  It’s only the media used that changes but the concept is old.  Outdoor ads can go back to ancient Greece and ancient Rome were businessmen used papyrus to advertise their products.  As technology evolved, people started printing it on paper (when printing machines were invented), then we have the billboards which I think replaced the wall painting ad campaign concept in most countries and then my favorite of all, the digital signage ad which, I think was pioneered by the Japanese (you will have to correct me on this if am wrong).   The good thing about digital signage is it’s so versatile that you can use it indoors.  Companies can also use them to communicate important information to it’s employees, it’s eye catching so information can be desiminated faster (I mean who wouldn’t look up to those moving images right?).  It’s cost effective (for companies who wants to improve their sales, for compared to putting an ad on tv digital signage gives you more “air time”), effiecient (for you wouldn’t need to have your employees waste their time giving out pamphlets) and above all it’s environment friendly (for you don’t need paper for this concept.  All you need is a screen to display the images and a media player to play the ad).