| Skill Domain | ADCD Capability | |--------------|------------------| | | Full JES2 batch job submission, output retrieval | | COBOL/PL/I/Assembler | Compilation, linkedit, execution, abend debugging | | TSO/ISPF | Full interactive menu system, file editing, dataset management | | CICS | Online transaction debugging via CICS Terminal | | IMS TM/DB | Basic IMS region control, message processing | | RACF (Security) | Most commands work; can define users, profiles, datasets | | z/OS UNIX | Shell access, file systems, OMVS |

ADCD isn’t magic. It has sharp edges:

But under the hood, that same system is running:

Each ADCD release corresponds to an IBM z/OS version (e.g., z/OS 2.4 ADCD, 2.5 ADCD, 3.1 ADCD). IBM updates the ADCD quarterly with the latest maintenance (PTFs) and subsystem fixes.