Signage for internal communication?

Guys as we know that internal communication is very important in any kind of business, so how much important is digital signage for internal communication?

There are many ways by which we can use digital signage as a internal communication in any kind of organization and company. Digital signage can be used to show various kind of details to your employees and other kind of people you can post some important information there, you can also show any video of yours instructing them about any new thing.