Using IMS with SNA or TCP/IP
IMS is an online transaction processing system. This means that application programs that use IMS can handle large numbers of data transactions from large networks of computers and terminals.
Communication throughout these networks has often been based on the Systems Network Architecture (SNA) family of protocols. IMS TCP/IP offers IMS users an alternative to SNA — the TCP/IP family of protocols for those users whose native communications protocol is TCP/IP.