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IBM Z and z/OS - IBM Developer
IBM Developer

IBM Z and z/OS

Bring AI to mission-critical workloads with IBM Z and z/OS

IBM zSystems and z/OS offer a stable, secure, continuously available, and scalable environment for applications running on the mainframe. The z/OS operating system makes full use of the latest IBM Z hardware and its many sophisticated peripheral devices, including compression and encryption accelerator cards.

21 January 2026

Article

High-performance SnapML preprocessing for machine learning on IBM Z

Boost machine learning performance on IBM Z with SnapML preprocessing that uses scikit learn pipelines, optimized C++ execution, efficient data transformations, graph feature engineering, and consistent training to production workflows for accurate and low latency enterprise inference.

High-performance SnapML preprocessing for machine learning on IBM Z

26 November 2025

Tutorial

Develop a JMS application for CICS Liberty

Learn how to create an enterprise messaging Java EE application using IBM MQ and deploy it into a CICS Liberty JVM server.

Develop a JMS application for CICS Liberty

20 October 2025

Tutorial

Generate Java records from COBOL with IBM Developer J2C tools

Use Java data bindings in IBM Developer for z/OS to create Java classes from COBOL data structures.

Generate Java records from COBOL with IBM Developer J2C tools

20 October 2025

Series

Spring Boot Java applications for CICS

Learn how to start using Java and Spring Boot in CICS Liberty. Spring Boot makes it easy to create standalone, production-grade Java apps that run easily.

Spring Boot Java applications for CICS

20 October 2025

Tutorial

Spring Boot Java applications for CICS, Part 5: JMS

Learn how to use Spring Boot's JMS capabilities integrated into a CICS Liberty server, with IBM MQ as the JMS provider.

Spring Boot Java applications for CICS, Part 5: JMS

20 October 2025

Tutorial

Spring Boot Java applications for CICS, Part 3: Transactions

Learn three different ways to achieve transaction management in Spring Boot with CICS.

Spring Boot Java applications for CICS, Part 3: Transactions

20 October 2025

Tutorial

Spring Boot Java applications for CICS, Part 4: JDBC

Create a Java app that accesses a relational database using Spring Boot's approach to JDBC.

Spring Boot Java applications for CICS, Part 4: JDBC

20 October 2025

Tutorial

Spring Boot Java applications for CICS, Part 2: Security

Explore three different options for securely deploying a Spring Boot application into Liberty running in CICS.

Spring Boot Java applications for CICS, Part 2: Security

20 October 2025

Tutorial

Build Java records from COBOL with IBM Record Generator

Automate the generation of Java helper classes from a COBOL copybook using the IBM Record Generator for Java V3.0.

Build Java records from COBOL with IBM Record Generator

20 October 2025

Tutorial

Spring Boot Java applications for CICS, Part 1: JCICS, Gradle, and Maven

Learn how to develop a Spring Boot application for CICS using Gradle or Maven, and how to deploy it into a CICS Liberty JVM server.

Spring Boot Java applications for CICS, Part 1: JCICS, Gradle, and Maven

19 September 2025

Open Project

z/OS Open Tools

Open source project: z/OS Open Tools

z/OS Open Tools

04 September 2025

Article

Accelerate Mainframe application modernization with Generative AI and COBOL Java interoperability

Learn how to modernize mainframe applications with IBM watsonx Code Assistant for Z, generative AI, COBOL modernization, and Java interoperability.

Accelerate Mainframe application modernization with Generative AI and COBOL Java interoperability
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IBM Z and z/OS - IBM Developer