The application server and transaction processing platform

IBM Z is renowned for processing transactions and serving enterprise applications. The new IBM z15™ mainframe enables you to:


Serve 1.2 million transactions per second and deliver scalability and security to applications.


Use the most secure, high-performing and lowest-cost hierarchical database manager for OLTP.


Discover the operating system designed to manage extreme transaction volumes.

Featured product

CICS Transaction Server for z/OS
Create new applications in your language of choice – from Node.js to COBOL – with support for high-transaction workloads in a secure, scalable, cost-efficient environment.

Hear from a customer

Banco Bradesco

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

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*99.99999% disclaimer: Internal data based on measurements and projections was used in calculating the expected value. The z15 servers must be configured in a parallel sysplex using z/OS 2.3 or above; GDPS management of data and middleware recovery across Metro distance systems and storage, including GDPS Metro Multi-site Workload and GDPS Continuous Availability; and DS888X with IBM HyperSwap. Necessary resiliency technology must be enabled, such as System Managed CF Structure Duplexing, Sysplex failure management and Capacity Provisioning Manager. Other configurations may provide different availability characteristics.