The platform designed for mission-critical workloads on hybrid cloud

Cloud promises agile, open innovation. So why haven’t more workloads moved there? Because sharing data across ecosystems have always added too much risk. Until now.

IBM z15™ delivers the cloud you want – with the privacy and security you need. Encryption everywhere protects you and your ecosystem, cloud native development simplifies life for your developers, and instant recovery reduces the impact of planned and unplanned downtime.

Explore IBM Z mainframes

IBM z15

IBM z15™

The newest IBM Z multi-frame system extends next-level resiliency and data privacy to hybrid cloud infrastructures.

IBM z14™

IBM z14®

The z14 dual- and single-frame systems introduced pervasive encryption along with openness, agility and scalability.

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Products A to Z

Find all IBM Z hardware, operating systems and software.

What's new

Get news about products and timely information about IBM Z.

What’s the business value of the transformative mainframe?

According to a new IDC analyst report, enterprise customers are expected to gain over USD 190M in revenue impact, USD 3M in operations cost savings, a 44% reduction in unplanned outages, and 2x more agility in new feature development.

What can IBM Z do for your IT infrastructure transformation?

Forrester on resiliency

What are the real costs of planned and unplanned downtime?

EMA on privacy

Learn how IBM Data Privacy Passports can meet increasing privacy demands.

Clabby on data compression

The benefits of co-locating compression with IBM z15’s processor.

Red Hat for IBM Z

Get ready for Red Hat OpenShift Container Platform on IBM Z and LinuxONE.

Two industry firsts

Neil Cattermull discusses IBM Z at the Think London event.

More blogs

Stay informed and get expert views on servers and mainframes.

Banco Bradesco

Handles 1.5 billion monthly transactions for 72 million customers with security and agility.

Allied Irish Bank

Uses the agility of the IBM Z platform to deliver open banking and new functionality.


Ensures service levels even during high-demand tax season.

IBM z15 functional matrix

See the supported features and functions.

IBM z15 Redbooks

Find documents that provide technical insights on IBM z15.

More Redbooks

Find Redbooks for IBM Z hardware, software and operating systems.

Application Discovery and Delivery Intelligence

See how to modernize apps with a zero-cost, no-installation trial.

z/OS Connect Enterprise Edition

Create scalable RESTful APIs securely from your critical applications.

More trials

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