GitHub Expands Copilot to Modernize Java and .NET Applications

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GitHub Copilot’s app modernization tools are now broadly available for developers working with Java and .NET, offering new ways to streamline migrations and bring legacy systems into the Azure ecosystem.

AI-Driven Legacy Upgrades

Instead of requiring teams to manually refactor or containerize older codebases, Copilot now introduces an agentic AI workflow that automates much of the modernization process. Developers can:

  • Run modernization assessments and reports to identify problem areas.

  • Apply AI-powered code transformations that update outdated code patterns.

  • Containerize applications for cloud-native deployments.

  • Patch builds and update dependencies for improved stability.

What used to take months of manual effort can now often be handled in just a matter of days, according to GitHub.

End-to-End Migration Support

The modernization features are designed to cover the entire upgrade journey — from initial analysis to final deployment in the cloud. With AI taking care of code rewrites and infrastructure adjustments, engineering teams can focus their energy on developing new features and innovations.

Early Results Show Promise

Microsoft, GitHub’s parent company, reports that customers adopting Copilot for modernization are already seeing:

  • Shorter upgrade timelines

  • Reduced engineering workload

  • Faster delivery of business value

In short, Copilot is positioning itself not just as a coding assistant but as a full partner in helping enterprises move legacy applications into the future.