Abstract: An information processing device includes circuitry that acquires a message to be transmitted to a transmission destination and user information of the transmission destination. The circuitry obtains a piece of information indicating a specialty from the message. The circuitry stores, in a memory, the piece of information indicating the specialty in association with the user information of the transmission destination. The circuitry searches for a user, in response to an inquiry related to a target specialty and according to content of the inquiry, based on one or more pieces of information indicating one or more specialties including the piece of information indicating the specialty. The one or more pieces of information are previously stored in the memory.

Abstract: An information synchronization system includes a first information processing apparatus and second information processing apparatuses to be synchronized with setting information. The first information processing apparatus includes first circuitry to determine a delegation destination apparatus from the second information processing apparatuses, transmit the setting information, registration information, and a request for processing related to synchronization of the setting information to the delegation destination apparatus, and transmit the setting information to the second information processing apparatuses.