Icon designs are just a small facet of what a digital illustration can be. Our world is filled with symbolism and icon designs, just look at your smart phone. Each app is designated by an icon and each icon is tied back to that company’s brand identity. But icons can be used for all sorts of things. They can help identify a software program, file, or function in technology. They can also be just another representation of your visual identity and help tie the whole package together.