CICS® stands for "Customer Information Control System." It is a general-purpose transaction processing subsystem for the z/OS® operating system. CICS provides services for running an application online, by request, at the same time as many other users are submitting requests to run the same applications, using the same files and programs.

IBM CICS (Customer Information Control System) is a family of mixed-language application servers that provide online transaction management and connectivity for applications on IBM mainframe systems under z/OS and z/VSE. CICS family products are designed as middleware and support rapid, high-volume online transaction processing.

IBM CICS® Transaction Server, often called CICS, is a world-class, secure, powerful, scalable, mixed-language application server platform used for hosting your transactional enterprise applications in a hybrid architecture.

Introduction to CICS - an IBM Redbooks course shows you what it is and what it does. Open a section below to get a brief summary and links to more information. Through its API, CICS provides services to an application: services such as data management, communications, and diagnostic services.

CICS (Customer Information Control System) is an IBM database/data communication (DB/DC) system. CICS makes it easy to send, receive, and process data through interaction with a terminal that consists of a display unit or cathode-ray tube (CRT) and a keyboard.

CICS provides a number of different constructs to allow data to be passed retrieved between programs and transactions as well as controlling how programs are invoked in a processing sequence.

CICS (Customer Information Control System) is middleware that sits between the z/OS IBM mainframe operating system and business applications. As an online transaction processing (OLTP) system, it is used to build customer transaction application programs.

Each IBM Redbooks video course consists of a series of video lectures addressing various aspects of using IBM CICS. Videos can be streamed or downloaded to be watched later. This course introduces CICS, an unparalleled mixed language application server.

CICS Tutorial - In this CICS tutorial we have explained some of the important concepts in Mainframer CICS (Customer Information Control System).

CICS® Transaction Server, often called simply CICS, is a powerful, mixed-language application server that runs on the IBM® mainframe operating system called z/OS®. An application server provides an environment to host applications.