End-to-end Mainframe application modernization

70% of the world’s transactions by value are running on the Mainframe

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Mainframe evolution strategies that are purpose-built to unlock AI innovation.

In today’s fast‑moving digital world, modernizing mainframe applications is a key step in any successful transformation strategy. IBM Consulting helps organizations unlock the full potential of their mainframe systems — reducing risk in hybrid multi‑cloud environments, ensuring every workload runs where it delivers the most value, and making modernization straightforward.

Whether your goal is to understand the business logic buried in legacy code, refactor applications, or identify the best platform for each workload, our experts can guide you every step of the way.

With AI‑powered tools, proven assets, and strong industry partnerships, we accelerate modernization from initial discovery to deployment — improving agility, lowering costs, and giving your business a competitive edge that wasn’t possible before.

Benefits 30%

Improvement in developer productivity, with faster impact analysis.1

40%

Gain in agility, coupled with lower costs by using the ‘Hybrid by Design’ methodology.

47%

Reduction in code refactoring efforts.2

Capabilities Transform and scale Core IBM z/OS Applications

We modernize and build mission‑critical applications on IBM z/OS to cut costs, boost efficiency, and unlock cloud‑native innovation—keeping your core systems relevant in a AI and hybrid cloud world.

Accelerate Innovation on LinuxONE & zLinux

We develop and modernize applications on Linux for IBM Z, combining agility, enterprise‑grade security, and seamless integration with cloud to drive faster digital transformation.

Optimize Mainframe Workloads for Cloud or Distributed Platforms

We adapt and migrate workloads from mainframe to cloud or distributed environments—freeing your business to scale, innovate, and reduce operational costs.

Modernize IBM System i & AIX Applications

We upgrade legacy applications from IBM System i (AS/400) and AIX to modern, cloud‑ready platforms—preserving critical functionality while improving performance and agility.

Transform Non‑IBM Mainframe & Midrange Systems

We revitalize applications from non‑IBM platforms, enabling hybrid cloud integration and future‑ready operations while maximizing the value of your existing investments.

Use cases

Assess and design Fast code refactoring Portfolio optimization Data migration Data archiving Natural and Adabas modernization
Hybrid by design
Two business people working together on a computer in modern office space

A hybrid cloud is the best architecture for application modernization. But not just any hybrid cloud approach, an integrated hybrid cloud platform that includes IBM Z. The reality for many businesses today is that they support many different computing models ranging from traditional on-prem to multiple public clouds and SaaS offerings and increasingly Edge based computing. 

Learn more about hybrid by design

Strategic partnerships

AWS Microsoft Azure Google Cloud IBM Services for IBM Cloud
Resources
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Blending mainframe power into the cloud computing landscape
See where the challenges lie in the transition from mainframe computing to modern cloud computing.
Generative AI illustration for mainframe application modernization
Mainframe modernization and AI
IBM has significantly invested in integrating AI capabilities into mainframe systems, recognizing the potential to enhance transactional workloads.
Illustration of Apps and Modernization
Annual Mainframe Modernization Business Barometer Report
Insights into how mainframe modernization strategies are evolving across industries, based on a survey of over 400 IT decision-makers worldwide.
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Footnotes

1Gartner, Emerging Tech: Generative AI Code Assistants Are Becoming Essential to Developer Experience, ID G00790320, May 2023

2IBM internal stats