The software world
Backend
The part of an app you don't see — the logic, the rules, and the stored data, running on a
server. It's the kitchen behind the restaurant: where the real work happens, out of sight. The frontend takes your order; the backend prepares it. Why it matters
Part of Software words you'll hear → Logins, saved data, and payments are usually backend work — handled on a server, not on your screen.