Quick definition · 2 min Coding term
Backend
The backend is the part of an app you do not see: the server, the database, and the logic behind the scenes.
Think of it like
The kitchen of a restaurant. Guests never see it, but it does the real cooking.
Example
When you log in, the backend checks your password and fetches your data, then the frontend shows it.
Why it matters
Knowing backend vs frontend tells you where a problem lives and which half a tool or job is about.
Where you’ll see it
serversNode.jsdatabases