What is a branch in Git, and why are branches useful?

Short answer: A branch in Git is like a separate line of development — a parallel universe for your code. It allows you to work on new features, bug fixes, or experiments without affecting the main codebase (usually called the main or master branch). Why branches are useful: They make collaboration easier by keeping each developer’s work isolated until it’s ready to be merged back. Real-world

Example code

Imagine your company website is live, but you need to add a “dark mode” feature. Instead of editing the main code directly (which might break the live site), you create a new branch called feature/dark-mode to work independently. Once it’s done and tested, you merge it back into main.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.