The IBM Customer Information Control System (CICS) is a widely installed transaction processing software system. A large number of transaction processing requirements running on mainframes today are handled by CICS systems. IBM designed CICS to support large numbers of terminals and a large transaction volume with fast and consistent response time. CICS can be described as an interface between CICS applications and the operating system.

CICS or CICS-compatible environments are now available for many platforms, including server support for OS/2, AIX, Windows NT, MVS/ESA, AS/400, HP-UX, Digital OSF/1, Siemens SINIX, Sun Solaris, and other UNIX platforms.

In supported environments, ACUCOBOL-GT offers the following features: