A radiation imaging system that is capable of controlling a radiation generating apparatus and a radiation detector based on communication between a first control application and a second control application is provided. The radiation imaging system comprises holding means for holding a plurality of processing requests transmitted from the second control application, determination means for determining whether the plurality of processing requests held in the holding means are processing requests to be continuously executed, and control right obtaining means for obtaining a control right to control imaging control means of the first control application that performs the control in order to continuously process the processing requests.
