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For many organizations, IBM i modernization can feel like a balancing act. On one hand, there’s pressure to adopt modern technologies like APIs, cloud platforms, and web applications. On the other, IBM i systems continue to run mission-critical operations reliably every day.

The good news? Modernization doesn’t have to mean disruption.

In 2026, leading organizations are taking a practical, incremental approach to IBM i modernization — one that enhances existing systems rather than replacing them.

What IBM i Modernization Really Means Today

Modernization is no longer about rewriting RPG applications or migrating away from IBM i. Instead, it’s about extending the capabilities of your current system to support modern business needs.

This includes:

The goal is simple: make IBM i more connected, flexible, and accessible.

Why “Rip and Replace” Doesn’t Work

Many organizations have considered replacing IBM i systems entirely. However, this approach often introduces unnecessary risk.

Challenges with full replacement include:

Instead, companies are choosing low-risk modernization strategies that preserve what already works.

API Enablement: The Foundation of Modernization

One of the most effective ways to modernize IBM i is through API enablement.

By exposing RPG programs as REST APIs, organizations can:

This approach allows businesses to build modern applications around their IBM i system — without rewriting it.

Leveraging RPG for Modern Development

RPG continues to be a powerful language for IBM i development. Modern tools now allow developers to build APIs and services directly in RPG.

Benefits include:

This means IBM i teams can modernize using the tools they already know.

Integration as a Modernization Strategy

Modernization isn’t just about new technology — it’s about connecting systems.

Through integration, IBM i can work seamlessly with:

This creates a unified ecosystem where data flows efficiently across the organization.

The Role of Cloud in IBM i Modernization

While not every system needs to move to the cloud, IBM i cloud strategies are becoming increasingly important.

Cloud environments support:

Many organizations are adopting hybrid models, combining on-prem IBM i systems with cloud-hosted resources.

Best Practices for IBM i Modernization in 2026

To modernize effectively without disruption, organizations should focus on:

Start with integration
APIs and system connectivity provide the fastest ROI.

Take an incremental approach
Avoid large-scale system overhauls.

Leverage existing skills
Use RPG and IBM i-native tools whenever possible.

Prioritize security
Ensure APIs and integrations are properly secured.

Plan for scalability
Build systems that can grow with your business.

What Successful IBM i Teams Are Doing Differently

Organizations that succeed with modernization tend to:

They understand that modernization is not a one-time project — it’s an ongoing evolution.

Final Thoughts

IBM i modernization in 2026 is about progress, not disruption.

By focusing on APIs, integration, RPG development, and cloud strategies, organizations can extend the life and value of their IBM i systems while meeting modern business demands.

The result is a more connected, flexible, and future-ready environment — without the risks of starting over.

Call to Action

Looking to modernize your IBM i environment without disruption?
Kato Integrations helps organizations build practical, scalable integration strategies that deliver real results.

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