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Revolutionize Your Java Codebase with AWS Transform Custom

5 min read AWS DevOps BlogFeb 5, 2026
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PractitionerHands-on experience recommended

In today's fast-paced tech landscape, managing technical debt is crucial for maintaining agility and efficiency. AWS Transform Custom addresses this challenge by providing intelligent automation for Java modernization. It allows you to tackle language version upgrades, API migrations, and framework updates seamlessly, reducing the burden on your development teams.

AWS Transform Custom employs agentic AI to automate large-scale code transformations. It continuously learns from each execution and developer feedback, ensuring high-quality, repeatable transformations without requiring specialized automation expertise. This means you can focus on delivering value rather than getting bogged down in manual updates. Before diving in, make sure you have the necessary development environment and the AWS Transform Custom CLI installed to get started.

In production, the key to success with AWS Transform Custom lies in understanding its capabilities and limitations. While it offers pre-built AWS-managed transformations for common use cases, you can also create user-defined transformations tailored to your specific needs. Keep in mind that thorough testing is essential after any transformation to ensure that your application behaves as expected post-migration.

Key takeaways

  • Leverage agentic AI to automate large-scale code modernization.
  • Utilize AWS-managed transformations for common use cases without setup.
  • Create user-defined transformations to address specific technical debt.
  • Ensure your development environment and CLI are ready before starting.
  • Test thoroughly after transformations to validate application behavior.

Why it matters

Reducing tech debt with AWS Transform Custom can significantly enhance your team's productivity and code quality, allowing for faster feature delivery and improved maintainability.

Code examples

Bash
atx --version                    # Display ATX version
Bash
atx custom def list              # List transformation packages
Bash
./gradlew build

When NOT to use this

The official docs don't call out specific anti-patterns here. Use your judgment based on your scale and requirements.

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