Ask a non-technical person what GitHub is and you'll usually hear "somewhere developers store code." That's true, and it wildly undersells it. GitHub is closer to the control room where modern software is planned, reviewed, tested and released, and its health says a lot about the health of your software.

Code storage is the least interesting thing GitHub does. The value is everything built around the code.

What it really provides

You may never open GitHub, but its history is your insurance policy: proof of what your software is, how it got that way, and how to undo a bad day.

Why it matters to the business

Software kept this way is protected. You're not hostage to one developer's laptop or memory; the full record lives somewhere safe and shared. If you're paying to have software built, insisting it lives in proper version control isn't a technical nicety, it's protecting an asset you paid for.