Signage server, signage system, and content delivery method

A signage server that download-delivers signage content to a signage terminal, the signage server comprising:

• a content database in which the signage content associated with the signage terminal that is a delivery target is stored;
• a terminal status management unit that acquires status information indicating a status of the signage terminal from the signage terminal which is the delivery target and stores the acquired status information;
• and
• a delivery controller that executes delivery control in which a delivery priority policy that defines a priority of delivery to the signage terminal in accordance with the status of the signage terminal is retained in advance, in which, when receiving an instruction to deliver the signage content to the signage terminal that is the delivery target, whether or not to immediately perform delivery is determined based on the status information and the delivery priority policy for every signage terminal which is the delivery target, and in which the delivery to the signage terminal which has a positive result of the determination is immediately performed and the delivery to the signage terminal which has a negative result of the determination is postponed.