--- title: Using AI tools to teach old apps new tricks | BRK220 description: GitHub Copilot Modernization is an end-to-end agentic system for modernizing legacy enterprise applications at scale, announced at Microsoft Build. Key... canonical: https://daily.dev/posts/using-ai-tools-to-teach-old-apps-new-tricks-brk220-djs2juwnt twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Using AI tools to teach old apps new tricks | BRK220 | daily.dev og:description: GitHub Copilot Modernization is an end-to-end agentic system for modernizing legacy enterprise applications at scale, announced at Microsoft Build. Key... og:url: https://daily.dev/posts/using-ai-tools-to-teach-old-apps-new-tricks-brk220-djs2juwnt og:image: https://api.daily.dev/og/posts/DJS2JuWnT.png og:image:alt: Using AI tools to teach old apps new tricks | BRK220 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Using AI tools to teach old apps new tricks | BRK220 **[Microsoft Developer](https://daily.dev/sources/microsoftdeveloper)** · 42 min read · 0 upvotes · 0 comments ## Summary GitHub Copilot Modernization is an end-to-end agentic system for modernizing legacy enterprise applications at scale, announced at Microsoft Build. Key capabilities include a generally available modernization agent CLI that runs parallel assessments across entire app portfolios, custom skills for encoding organization-specific migration patterns, and new previews of a command center dashboard and rulebooks for governance. The system supports Java (Struts to Spring Boot), .NET (WebForms to Blazer/Aspire), and now mainframes (COBOL to Java). It integrates with Azure Migrate for IT-led discovery and deploys to Azure Container Apps. Customers report 60–88% reductions in migration effort, with Microsoft internally saving over 10,000 engineering hours. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#github](https://daily.dev/tags/github), [#java](https://daily.dev/tags/java), [#.net](https://daily.dev/tags/.net) [View this post on daily.dev](https://daily.dev/posts/using-ai-tools-to-teach-old-apps-new-tricks-brk220-djs2juwnt) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Using AI tools to teach old apps new tricks | BRK220","url":"https://daily.dev/posts/using-ai-tools-to-teach-old-apps-new-tricks-brk220-djs2juwnt","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/using-ai-tools-to-teach-old-apps-new-tricks-brk220-djs2juwnt"},"datePublished":"2026-06-05T14:13:31.134Z","dateModified":"2026-06-18T21:22:23.489Z","description":"GitHub Copilot Modernization is an end-to-end agentic system for modernizing legacy enterprise applications at scale, announced at Microsoft Build. 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