Logos are the best way to make people ware about your brand and services. For example, there is an arrow in Amazon's logo which is pointing from first letter "a" to last letter "z" which means they stock almost everything under one roof. In the early 90's, brands started evolving their logos to stop duplicity.
This infographic, brought to you by Packaging Express, revolves around the logo evolution of famous brands. Go through the same and don't forget to hit the share buttons.