The disclosure relates to technology for coordinating execution of serverless functions. One or more events are received from one or more event sources. The one or more events are mapped to one or more event states of a function graph according to a mapping rule, the one or more event states including one or more actions, and the one or more actions which satisfied the mapping rule are executed. The received events are sent to a computer system to trigger the computer system initiating one or more computing resource groups for executing one or more serverless functions associated with the one or more actions. One or more responses are received from the serverless functions.