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  Learn about artificial intelligence and machine learning across the GitHub ecosystem and the wider industry.
  - Generative AI
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  - GitHub Copilot
    Change how you work with GitHub Copilot.
  - LLMs
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  - Machine learning
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- How AI code generation works
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  Learn more
Developer skills
- Developer skills
  Resources for developers to grow in their skills and careers.
  - Application development
    Insights and best practices for building apps.
  - Career growth
    Tips & tricks to grow as a professional developer.
  - GitHub
    Improve how you use GitHub at work.
  - GitHub Education
    Learn how to move into your first professional role.
  - Programming languages & frameworks
    Stay current on what’s new (or new again).
- Get started with GitHub documentation
  Learn how to start building, shipping, and maintaining software with GitHub.
  Learn more
Engineering
- Engineering
  Get an inside look at how we’re building the home for all developers.
  - Architecture & optimization
    Discover how we deliver a performant and highly available experience across the GitHub platform.
  - Engineering principles
    Explore best practices for building software at scale with a majority remote team.
  - Infrastructure
    Get a glimpse at the technology underlying the world’s leading AI-powered developer platform.
  - Platform security
    Learn how we build security into everything we do across the developer lifecycle.
  - Scripting & automation
    How GitHub engineers use scripting and automation.
  - User experience
    Find out what goes into making GitHub the home for all developers.
- How we use GitHub to be more productive, collaborative, and secure
  Our engineering and security teams do some incredible work. Let’s take a look at how we use GitHub to be more productive, build collaboratively, and shift security left.
  Learn more
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  - Automation
    Automating your way to faster and more secure ships.
  - CI/CD
    Guides on continuous integration and delivery.
  - Collaboration
    Tips, tools, and tricks to improve developer collaboration.
  - DevOps
    DevOps resources for enterprise engineering teams.
  - DevSecOps
    How to integrate security into the SDLC.
  - Governance & compliance
    Ensuring your builds stay clean.
  - Secure enterprise development
    Locking down the SDLC one step at time.
- How enterprise engineering teams can successfully adopt AI
  Learn how to bring AI to your engineering teams and maximize the value that you get from it.
  Learn more
News & insights
- News & insights
  Keep up with what’s new and notable from inside GitHub.
  - Company news
    An inside look at news and product updates from GitHub.
  - Product
    The latest on GitHub’s platform, products, and tools.
  - Octoverse
    Insights into the state of open source on GitHub.
  - Policy
    The latest policy and regulatory changes in software.
  - Research
    Data-driven insights around the developer ecosystem.
  - Surveys
    What developers and industry leaders say matters most.
  - The library
    Older news and updates from GitHub.
- Unlocking the power of unstructured data with RAG
  Learn how to use retrieval-augmented generation (RAG) to capture more insights.
  Learn more
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- Open source
  Everything open source on GitHub.
  - Documentation
    Tips for creating and maintaining documentation.
  - Gaming
    Open source games on GitHub.
  - Git
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  - Licenses
    Open source licenses, explained.
  - Maintainers
    Spotlighting open source maintainers.
  - Social impact
    How open source is driving positive change.
- An introduction to innersource
  Organizations worldwide are incorporating open source methodologies into the way they build and ship their own software.
  Learn more
Security
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  Stay up to date on everything security.
  - Application security
    Application security, explained.
  - Supply chain security
    Demystifying supply chain security.
  - Vulnerability research
    Updates from the GitHub Security Lab.
  - Web application security
    Helpful tips on securing web applications.
- The enterprise guide to AI-powered DevSecOps
  Learn about core challenges in DevSecOps, and how you can start addressing them with AI and automation.
  Learn more

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GitHub Actions: macOS virtual environment updated to Catalina

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November 6, 2019

The GitHub Actions macOS virtual environment has been upgraded to Catalina (v10.15). Jobs using the `macos-10.14` virtual environment will not run and must be migrated to use `macos-latest`.

In addition to Catalina, other changes include:

Xcode 11.1 will be set as default
Mono 6.4, Xamarin.iOS 13.4, Xamarin.Android 10.0, Xamarin.Mac 6.2 will be set as default
.NET Core 3.0 will be set as default
Node.JS 12 will be set as default
Removed Xamarin.iOS 13.2
Removed Xamarin.iOS SDK 12.*
Removed Xamarin.iOS SDK 11.*
Removed Xamarin.iOS SDK 10.*
Removed Xamarin.Android SDK 9.*
Removed Xamarin.Android SDK 8.*
Removed Xamarin.Android SDK 7.*
Removed Xamarin.Mac SDK – 5.*
Removed Xamarin.Mac SDK – 4.*
Removed Xamarin.Mac SDK – 3.*
Removed Mono 4.x
Removed Mono 5.x
Removed Mono 6.0
Removed Xcode 10.*
Removed Xcode 9.*
Removed legacy iOS Simulators (iOS 8.4 – 10.2)
Removed .NET Core 2.x (only 3.x are on image)
Removed Android build tools less than 24.0.0

To learn more about the different virtual environments and included software, please read Virtual Environments for GitHub Actions. Also, please contact GitHub Support if you run into any problems or need help.

GitHub Actions: Linux and Windows virtual environments updates

November 6, 2019

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We’ve fully deployed several updates to the GitHub Actions virtual environments. Highlights include:

Ubuntu 16.04 LTS

Added newer versions and removed older versions of .NET Core SDK
Upgraded Erlang 10.4.4 to 10.5.3
Upgraded Firefox 69.0 to 70.0
Upgraded Git LFS 2.8.0 to 2.9.0
Upgraded Google Chrome 77.0.3865.90 to 78.0.3904.70
Upgraded Google Cloud SDK 263.0.0 to 268.0.0
Added Haskell Cabal 2.0.0.1, 2.2.0.0, 2.4.1.0, 3.0.0.0
Added Haskell Stack 2.1.3
Upgraded Heroku 7.30.0 to 7.33.3
Upgraded HHVM 4.23.0 to 4.28.1
Upgraded kubectl v1.15.4 to v1.16.2
Upgraded helm v2.14.3 to v2.15.1
Added Kind v0.5.1
Changed default Node from v10.16.3 to v12.13.0
Upgraded Webpack 4.40.2 to 4.41.2
Upgraded Yarn 1.17.3 to 1.19.1
Upgraded rustup 1.19.0 to 1.20.2
Upgraded rust 1.37.0 to 1.38.0
Upgraded cargo 1.37.0 to 1.38.0
Upgraded Zeit Now CLI 16.2.0 to 16.4.0
Added Az Module 2.3.2 and 2.6.0
Upgraded Python 3.7.4 to 3.7.5
Added Python 3.8.0

Ubuntu 18.04 LTS

Added .NET Core SDK 3.0.100
Upgraded Erlang 10.4.4 to 10.5.3
Upgraded Firefox 69.0 to 70.0
Upgraded Git LFS 2.8.0 to 2.9.0
Upgraded Google Chrome 77.0.3865.90 to 78.0.3904.70
Upgraded Google Cloud SDK 263.0.0 to 268.0.0
Added Haskell Cabal 2.0.0.1, 2.2.0.0, 2.4.1.0, 3.0.0.0
Added Haskell Stack 2.1.3
Upgraded Heroku 7.30.0 to 7.33.3
Upgraded HHVM 4.23.0 to 4.28.1
Upgraded kubectl v1.15.4 to v1.16.2
Upgraded helm v2.14.3 to v2.15.1
Added Kind v0.5.1
Changed default Node from v10.16.3 to v12.13.0
Upgraded Webpack 4.40.2 to 4.41.2
Upgraded Yarn 1.17.3 to 1.19.1
Upgraded rustup 1.19.0 to 1.20.2
Upgraded rust 1.37.0 to 1.38.0
Upgraded cargo 1.37.0 to 1.38.0
Upgraded Zeit Now CLI 16.2.0 to 16.4.0
Added Az Module 1.0.0, 2.3.2, and 2.6.0
Upgraded Python 3.7.4 to 3.7.5
Added Python 3.8.0

Windows Server 2016

Upgraded Python 3.7.4 to 3.7.5
Upgraded PHP 7.3.10 to 7.3.11
Changed default Node from v10.16.3 to v12.13.0
Upgraded npm 6.9.0 to 6.12.0
Added .NET Core SDK 3.0.100 and .NET Core Runtime 3.0.0
Upgraded Azure CosmosDb Emulator 2.5.7 to 2.7.0
Upgraded Cloud Foundry CLI 6.46.1 to 6.47.1
Added kubectl v1.16.2
Added Kind v0.5.1

Windows Server 2019

Added LLVM to the Visual Studio 2019 installation
Upgraded Python 3.7.4 to 3.7.5
Upgraded PHP 7.3.10 to 7.3.11
Changed default Node from v10.16.3 to v12.13.0
Upgraded npm 6.9.0 to 6.12.0
Upgraded Azure CosmosDb Emulator 2.5.7 to 2.7.0
Upgraded Cloud Foundry CLI 6.46.1 to 6.47.1
Added kubectl v1.16.2
Added Kind v0.5.1

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GitHub Actions: Self-hosted runners

November 5, 2019

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GitHub Actions now supports self-hosted runners. Hosting your own runners offers maximum flexibility and control of your workflows. Self-host your runners if you need a proprietary image or container, access to on-prem resources, or a more powerful machine. Learn more about using self-hosted runners with your workflows here.

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