The cloud you want – with the privacy and security you need. Meet the new IBM z15™

What’s new

z/OS V2.4 and z/OS V2.5

IBM has released a preview announcement of IBM z/OS Version 2 Release 5 (V2.5).

Also, with a continuous delivery model, new z/OS capabilities are available each quarter with no impact to stability, complexity or costs. New z/OS V2.4 capabilities enable you to:

Trusted infrastructure

IBM z/OS provides a secure, scalable and resilient infrastructure.

A better hybrid cloud

IBM z/OS brings enterprise capabilities to a hybrid cloud, delivering agility and trust.

Continuous delivery

New functionality is available quarterly with no impact to stability, complexity or costs.

What IBM z/OS offers

Accelerate hybrid cloud

Deploy and manage Linux on Z apps on z/OS platforms

Provision with automated self-service processes

Deploy z/OS resources and services with cloud apps

Alternative enablement of z/OS Container Extensions

Develop applications

Provide Java language and function for z/OS

Run C, C++, COBOL, PL/I Fortran and assembler apps

Generate code without runtime dependencies

Help augment existing IBM Z application stacks

Parse documents with or without validation

Gain ease of use

Manage z/OS systems with a web-based interface

Simplify software installation and set-up

Simplify software maintenance

Upgrade z/OS for a tailored upgrade path

Improve performance

Respond to planned events by changing LPAR capacity

Report on nearly all aspects of z/OS performance

Summarize OS, middleware or workload activities

Define workload importance and performance goals

Enable security

Leverage biometrics to strengthen authentication

Encrypt and compress JES2-managed data

Protect data and resources and control permissions

Safeguard data dumps and protect data from vendors

Scan for vulnerabilities and remediate

Issue your own X509 certificates right from z/OS

Manage systems

Build and deploy networking apps on z/OS

Configure processor’s channel subsystem and OS

Use a PC-based interface to HCD

Bring managed storage to a distributed network

Monitor and manage sysplex in JES2/JES3

Hear from customers

z/OSMF enables mainframe users to use open interfaces for applications which benefit our IT operational management. From now on, z/OSMF is a key component of our operating system rather than an independent product.

Lihui Liu, Project Manager, ICBC Data Center

Explore resources

New community

Participate to make the mainframe even more integrated and agile.

New software pricing

New enterprise consumption and capacity solutions offer flexibility and savings.


Delivers fast, personalized customer services at scale with cutting-edge IBM technology

Mitsubishi Electric

Supports client demands with a wider redesign of IT infrastructure.


Cuts dev costs with Z Container Pricing and empowers developers with RESTful APIs.

For developers

Get updates on DevOps, find trials and connect with experts.

For students

Develop valuable IT and mainframe skills.

All training

Learn and succeed with personalized learning.

ISVs and z/OS

See the independent software vendors reporting support for z/OS.

ISVs and IBM Z

Learn about our network of service providers and 700 ISVs with over 4,000 applications.


See Consolidated Service Test, Recommended Service Updates and more.

More support

Get the services and support you need.

IBM z/OS Management Facility (z/OSMF)

This framework improves programmer productivity by using simplified, streamlined and automated tasks.

IBM Cloud Provisioning and Management for z/OS

Rapidly provision z/OS software subsystems using automated processes.

More trials

Try the latest IBM Z capabilities today at zero cost, and with no installation required.