# Interfaces

Interfaces initiate, control, and terminate sessions; and manage the data flow between Substation ES and transaction processing systems.

Substation ES contains the following interfaces:

Interfaces | Description
--- | ---
ESB Interface | ESB Interface (formerly referred to as the Transformer) translates data types between TIBCO applications and the CICS or IMS transaction processing applications. See ESB Interface.
CICS Interface | CICS Interface passes data between TIBCO messaging applications and CICS applications in the z/OS environment. See CICS Interface
IMS Interface | IMS Interface connects TIBCO messaging applications and IMS applications in the z/OS environment. See IMS Interface.
RED (XCF) Interface | RED (XCF) Interface connects external applications with z/OS programs and transactions that are located in the batch, CICS, IMS BMP, IMS MPP or TSO regions. See RED (XCF) Interface .

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