IBM z/OS Operating System Products

Secure and scalable infrastructure

The IBM® z/OS® (PDF, 480KB) operating system delivers the secure, scalable, available infrastructure required for hybrid architectures to support on premises, off premises, or provisioned as-a-service.

z/OS integrity statement (PDF, 75.6KB) →Announcing container pricing

Security

Focus on a transparent and consumable approach to enable extensive encryption of data in-flight and at rest.

Learn about secure systems

Hybrid cloud

Transform from an IT cost center to a value-generating service provider, delivering world-class services on-premises or off-premises.

Learn about z/OS Cloud

Insights with AI

Minimize the cost and complexity of analytics by accessing your enterprise data “in-place” with minimal data duplication or data movement.

Learn about machine learning

Availability

Gain 99.999% application availability and unmatched disaster recovery. Some client installations run for a decade without a second’s downtime.

Learn about operational excellence

The operating system

IBM z/OS V2.3

This operating system delivers innovations designed to build the highly scalable and securable next-generation infrastructure.

See product details (480KB) Explore z/OS technologies

Featured z/OS technologies and tools

System Display and Search Facility (SDSF)

SDSF technology uses IBM z/OSMF to view and help monitor and manage your z/OS sysplex, in both JES2 and JES3 environments.

Learn about SDSF

Resource Measurement Facility (RMF)

This optional feature collects data for z/OS and sysplex environments to monitor systems' performance behavior and tune and configure the system.

Learn about RMF

IBM SDK for Node.js - z/OS

Node.js can enable enterprise clients to efficiently augment existing IBM Z® application stacks to provide a timely response to customer requirements driven by digital transformation.

Learn about Node.js

IBM® Multi-Factor Authentication for z/OS®

This software works with IBM Resource Access Control Facility (RACF®) to add authentication factors to z/OS systems, define policies for these factors and apply them to specific IDs.

Learn about MFA

Resource Access Control Facility (RACF)

RACF technology provides security for an installation's data and protects your vital system resources and controls what users can do on the operating system.

Learn about RACF

IBM Open Data Analytics for z/OS

This software integrates open source analytics, advanced data access and abstraction by combining open source run times and libraries with analysis of z/OS data at its source.

Learn about Open Data Analytics

“z/OS V2R3 runs extremely stable, robust and offers good improvements to manage our daily business e.g. in Unix System Services, JES2 and z/OSMF”

—Horst Schmidt, Generali Shared Services S.c.a.r.l.