A scanning system comprises a server, scanner, and terminal, the server including: a reception unit configured to receive a scan setting and a start instruction from one of the scanner and the terminal; a storage unit configured to store the scan setting and to issue the identification information; a determination unit configured to determine which of the scanner and the terminal has transferred the scan setting and the start instruction; and a processing unit configured, when the determination unit determines that the scanner has transferred the scan setting and the start instruction, to transfer the scan setting and the start instruction to the scanner, and when the determination unit determines that the terminal has transferred the scan setting and the start instruction, to cause the storage unit to store the scan setting and to transfer, to the scanner, identification information indicating the stored scan setting.