While staying in a hotel or working in an office building, you may see a monitor with information. The content could be information about the building or advertising content such as product information.
For instance, look at the monitor with advertising content near the lift in the following image. You may see one in your office or mall building.
Source image: https://onelan.com/case-studies/corporate/pwc-a-communication-tool-to-reach-2000-employees.html
Another example you may see is the advertising monitors in airports on the walls:
Products and services need to be marketed so people can know about them. It's important because if people need stuff or services that we are selling, they will contact us to get further information. It's an opportunity...