1.4 System Administration Perspective
For a software administrator, there is little that remains the same. There are the same applications to be executed and end-users still access applications using the same 3270 terminals. Apart from that, everything else is different and relies on a native Tuxedo architecture to manage transactions with the aid of CICS Runtime to provide an API between the COBOL programs and Tuxedo.
Figure 1-2 CICS Runtime Architecture

CICS Runtime provides the run-time support to allow converted CICS applications to run in a robust production ready environment based on TUXEDO /T, while offering applications functionally equivalent behavior.
In term of deployment, the system is distributable on one or multiple machines in a single TUXEDO domain, or several domains communicating through a TUXEDO domain.
In term of administration, the administration is native TUXEDO, with all tuxedo administration tools being normally usable, plus a few administration tables for CICS only concepts, like terminal definitions, and Transaction - First Program table.