Digital signage is a form of electronic display that shows information, advertising and other messages. Digital signs (such as LCD, LED, plasma displays, or projected images) can be found in public and private environments, such as retail stores and corporate buildings.

Advertising using digital signage is a form of out-of-home advertising in which content and messages are displayed on digital signs with a common goal of delivering targeted messages to specific locations at specific times. This is often called "digital out of home" or abbreviated as DOOH.

The benefits of digital signage over traditional static signs are that the content can be exchanged more easily, animations can be shown, and the signs can adapt to the context and audience, even interactively. Digital signage also offers superior return on investment compared to traditional printed signs.