Delivery

Enhanced Definition

In the context of IBM z/OS, **delivery** refers to the process of transmitting and making available job output, messages, or data files to their designated recipients or storage locations. It ensures that the results of processing, inter-application communications, or transferred data reach their intended destination within the mainframe ecosystem or to connected systems. In the z/OS environment, "delivery" primarily refers to the process of making job output (such as SYSOUT datasets, reports, or logs) available to its intended destination, whether it's a physical printer, a specific dataset, a user's TSO session, or another system. It also encompasses the transfer of data or software components between systems or locations.

Key Characteristics

- Output Spooling and Management: For batch jobs, output (SYSOUT) is spooled by JES (Job Entry Subsystem) and then delivered to printers, datasets, or held for user retrieval via TSO/ISPF, often controlled by OUTPUT JCL statements.
- Reliable Message Queuing: Messaging middleware like IBM MQ for z/OS provides asynchronous, guaranteed message delivery between applications, often with transactional integrity and persistence options.
- Controlled File Transfer: Data files can be delivered within z/OS (e.g., dataset copies via utilities like IEBGENER) or