See Tivoli Event Services Manager.

Abbreviation for embedded server management.

Enterprise Spend Management

external security manager. A security product that is invoked by the OS/390 System Authorization Facility. RACF is an example of an ESM.

External Security Manager. A CICS programmable interface to be used by user or vendor-written security packages, such as IBM's RACF.

Abbreviated for embedded server management.

Enterprise Systems Management