GitHub.

GitHub is just Google Drive for code. It's where people store and back up their code online, the same way you'd keep your photos in the cloud instead of only on your phone.

That's the whole idea. Your code lives on your computer, but GitHub keeps a copy online so it's safe, versioned, and easy to share or pull back down on another machine.

You'll bump into it the second you start building anything. Vibe coding apps get pushed to GitHub, AI agent pull from it, and a lot of automations fire off a GitHub event (you push new code, something runs). You don't need the deep mechanics to start. Just know it's the cloud home for your code.