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AI & ML

AI & ML
Learn about artificial intelligence and machine learning across the GitHub ecosystem and the wider industry.
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How AI code generation works
Explore the capabilities and benefits of AI code generation and how it can improve your developer experience.
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Developer skills

Developer skills
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- Programming languages & frameworks
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Get started with GitHub documentation
Learn how to start building, shipping, and maintaining software with GitHub.
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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
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- Platform security
  Learn how we build security into everything we do across the developer lifecycle.
- 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.
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Enterprise software

Enterprise software
Explore how to write, build, and deploy enterprise software at scale.
- Automation
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- CI/CD
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- Collaboration
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- DevSecOps
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- Governance & compliance
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GitHub recognized as a Leader in the Gartner® Magic Quadrant™ for AI Code Assistants
Learn why Gartner positioned GitHub as a Leader for the second year in a row.
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News & insights

News & insights
Keep up with what’s new and notable from inside GitHub.
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- Octoverse
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- Policy
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- Research
  Data-driven insights around the developer ecosystem.
- 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.
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Open Source

Open Source
Everything open source on GitHub.
- Git
  The latest Git updates.
- Maintainers
  Spotlighting open source maintainers.
- Social impact
  How open source is driving positive change.
- Gaming
  Explore open source games on GitHub.
An introduction to innersource
Organizations worldwide are incorporating open source methodologies into the way they build and ship their own software.
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Security

Security
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- 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.
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Home / News & insights / The library

CNAME support for GitHub Pages

Please read GitHub Help – Setting up a custom domain with Pages for the most up-to-date information on setting up a CNAME on your account.

PJ Hyett·@pjhyett

January 21, 2009 | Updated January 4, 2019

Please read GitHub Help – Setting up a custom domain with Pages for the most up-to-date information on setting up a CNAME on your account.

Written by

PJ Hyett

@pjhyett

News & insights

GitHub joins coalition advocating for fixes to California AI Transparency Act to protect open source

We’re calling for targeted amendments to resolve conflicts with open source licensing and align with international transparency frameworks while preserving regulatory intent.

Margaret Tucker

Company news

GitHub availability report: May 2026

In May, we experienced nine incidents that resulted in degraded performance across GitHub services.

Jakub Oleksy

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Company news

GitHub Universe is back: All together now, in the agentic era

GitHub Universe is back: returning to the historic Fort Mason Center in San Francisco on October 28–29, 2026.

Ariel Kanter

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