CICS

CICS (Customer Information Control System) is a software system used by businesses to manage and process large volumes of transactions quickly and reliably. It acts like a digital traffic cop, coordinating requests from users (such as banking, reservations, or online order systems) to access and update data stored in mainframes. CICS ensures these transactions are completed accurately, securely, and in real-time, enabling organizations to serve many customers simultaneously without errors or delays. Essentially, it helps large companies handle complex, high-speed interactions smoothly and efficiently.