A data processing apparatus (10) includes a receiver (120), a specifier (142), and a task controller (141). The receiver (120) receives a setting of a process flow defining subprocesses that are sequentially executed with respect to data output from a device (21). The specifier (142) specifies, based on the setting received by the receiver (120), processing units (130) for execution of the subprocesses. The task controller (141) determines, based on the setting received by the receiver (120), and launches the tasks in accordance with the order, an order for launching tasks for achievement of the processing units (130) specified by the specifier (142).