CICS Transaction Gateway

The CICS® Transaction Gateway manages communication between servers and applications.

CICS Transaction Gateway

The CICS Transaction Gateway runs on a wide variety of operating systems. On the Windows®, UNIX® and Linux® operating systems, it can access many different types of CICS server; on z/OS®, it can access only CICS Transaction Server for z/OS. On the Windows, UNIX and Linux operating systems, CICS Transaction Gateway uses a Client daemon to route External Call Interface (ECI), External Presentation Interface (EPI), and External Security Interface (ESI) requests to a CICS server. On z/OS, CICS Transaction Gateway can route only ECI requests, and has no Client daemon.

Communication between CICS Transaction Gateway and the Client application uses the following protocols: TCP/IP sockets and SSL provide an efficient method of communication for intranet applications. CICS Transaction Gateway can manage many concurrent links to connected Web browsers. It can also control asynchronous conversations to multiple CICS servers. The multithreaded architecture of the CICS Transaction Gateway enables a single Gateway to support multiple concurrently connected users.
The CICS Transaction Gateway provides this functionality:

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