A Mainframe basic interview question, be prepared to answer this one. CICS stands for Customer Information Control System. All of the administration of IBM's online transactions are brought within the purview of this sort of system. CICS is for computer integrated circuit system, and it refers to a mode of processing that is mostly launched by the use of a single request that may also influence one or more objects. 1969 was the year that saw the beginning of the CICS's establishment.