Advertising using digital signage is a form of digital out-of-home (DOOH) advertising. Its purpose is to deliver messages targeted to specific places, at specific times, with content tailored to the display location (local advertising). Information provided in an attractive visual form has a chance to be read and remembered by employees, clients or students. Additionally, such media are used, for example, to broadcast important events or as a modern notice board. A large and fast change of content requires the use of online monitoring and management of displays via CMS.