Management device, management system, management method, and program

A management device comprising:

• a processor and a memory, wherein the processor is configured to execute a program stored in the memory to
• communicate, by a communicator, with a plurality of management targets;
• determine, by a determiner, based on information representing a status of each of the management targets each received by the communicator, whether a system status of the plurality of management targets satisfies one of a plurality of transition conditions, wherein the plurality of transition conditions are defined that transit the system status of the plurality of management targets between a normal status, a status of faster control response than the normal status, a status of more enhanced monitoring of the management targets with lower control responsiveness than the normal status, and a status of more increased network communication traffic than the normal status;
• and
• in response to the determiner determining that the system status satisfies one of the plurality of transition conditions, adjust, by an adjuster, a communication status of the communicator which increases or decreases, in accordance with the system status and a processing performance of the management device, a communication frequency of a status-obtaining request from the communicator to at least one of the plurality of management targets.