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Java at scale -- Modernize legacy applications with no rewrites, no risk, just results
IBM Developer

Blog post

Java at scale

Modernize legacy applications with no rewrites, no risk, just results

By Isabella Rocha

At Think 2025, IBM sent a strong message during the keynote session, "Tuned for Success: IBM’s Commitment to Partner Growth and Innovation" -- you can scale enterprise Java without rewriting everything, and without the usual risk.

When Marc Haberkorn, IBM’s VP of WebSphere & Runtimes, took the stage, he broke down a reality many enterprises are quietly struggling with: outdated Java 8 applications, little documentation, and no development team in sight. That combination is more than legacy, it’s a liability.

Watch Marc's segment on the keynote here (which starts around 22-minutes):

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To help clients confidently move forward, IBM introduced a portfolio of innovations delivered as part of JSphere Suite for Java, a purpose-built suite designed to accelerate application modernization and extend the life of enterprise Java workloads:

  • Enterprise Application Service for Java (EASeJ): A fully managed, as-a-service environment to run modernized apps without the operational burden. (Learn more in this blog.)

  • MoRE (Modernized Runtime Extension): Upgrade to Java 17 while preserving existing WebSphere configurations, including scripts, automation, and all. (Learn more in this blog.)

  • AI-powered modernization tools: Discovery, planning, and code transformation accelerated by watsonx Code Assistant (wCA), which cuts planning time by up to 99%. (Learn more in this article.)

IBM has already validated this approach internally across 200+ apps. Now it’s your turn.

What's next?

If you're looking to scale responsibly, simplify legacy complexity, and unlock modern innovation, IBM’s JSphere Suite for Java offers the runway you need.

  • Start your modernization journey: Dive into JSphere, EASeJ, MoRE, and EAR to see how you can modernize with less risk and more flexibility.

  • Save your spot in TechXchange 2025, because this conversation is just getting started.