The client application and CICS® Transaction Gateway can be on different machines and the Gateway daemon listens on a specific port for incoming client requests. The Gateway daemon runs as a standalone process, handles the management of connections and threads, and forwards client requests to CICS.
In a remote mode configuration, the CICS Transaction Gateway runs a process known as a Gateway daemon which receives requests from client applications and forwards those requests to CICS servers. Client applications send requests to a Gateway daemon using either TCP/IP or SSL.
Remote mode is best suited to large-scale systems and has the following features: