Advertisement method, advertisement system, and advertisement management method

An advertisement system comprising:

• a second management device;
• and
• a display device, wherein
• the second management device acquires first advertisement information indicating an advertisement of a first store from a first management device that manages advertisement information of a plurality of actual stores including the first store,
• the display device acquires the first advertisement information from the second management device,
• the display device displays the advertisement of the first store in a size viewable by multiple persons in a public place based on the first advertisement information,
• the second management device acquires visit information on a visitor to the first store,
• the second management device transmits information related to an advertisement cost to the first management device based on the visit information, and
• the visitor is a person who visits the first store based on the advertisement of the first store displayed in the public place.

An advertisement management method comprising:

• managing advertisement information of a plurality of actual stores including a first store;
• transmitting first advertisement information indicating an advertisement of the first store to a second management device;
• and
• receiving information related to an advertisement cost from the second management device, wherein
• the information related to the advertisement cost is information based on information related to a visitor who visits the first store based on the advertisement of the first store displayed in a public place.