The present invention relates to a cloud computing system, and an event processing method thereof, more specifically, in the cloud computing system comprising a connected cloud server via a plurality of clients to the network, by generating for event handling message including the sequence of events encrypting, and transmitting the encrypted for the event processing message to the cloud server through the network client; And a plurality of the decoded after receiving each for processing an event message over the network from the client, to process the events according to the sequence of events included in the event processing for the decrypted message, cloud server; The cloud server signature verification (verify signature) of the message according to confirm the message processing sequence according to the sequence of events from a header (header) area for the number of the decoded event handling messages, check the message processing procedure includes characterized in that it determines whether or not within the error, the message from the portion and, if it is determined that no error has occurred, determine the payload (payload) portion of the message that corresponds according to the message processing procedure by performing the event processing in a row .
Thus, the cloud computing system, and an event processing method thereof according to the present invention by processing a number of messages received according to the event processing procedure included in the header part of the received message for the event processing cloud server asynchronously, multiple the instruction corresponding to the event can be processed efficiently.