Disclosed herein is an event management server for providing services related to participation in events to an information processing device that performs an information processing task using data provided as an event by a content provision server, the event management server including: an event information storage section adapted to store event-related information; and a correlation information preparation section adapted to acquire details of a user operation, extract events that match the details of the user operation, prepare event data that represents the events in a given format, transmit the data to the information processing device, acquire details of a user operation performed on the information processing device to register for participation, prepare registration information that correlates a user with the event, and store the registration information in a storage device. The correlation information preparation section extracts matching events on the basis of user information that includes the registration information.