Signage is everywhere, you see it every single day and usually do not even realise. It shows you which shop to go into, which floor to go up to or which road to travel down to get to your destination. Even something as simple as a house number is a sign.
Because signage covers such a wide range of items, it also has the benefit of being able to be made in an almost unlimited number of ways
Even something as basic as a board with a painted design or vinyl graphics can work as signage, you do not need to go fancy. Keep it simple, keep it effective.
With a wide range of available materials, all in multiple colours, you can achieve something that stands out and looks good. Customisation is almost always possible.
Whether it is a sign for your shop, or directional signage in your office, the moment it is up it will start working for you, bringing people in or helping them find their way.