Question 1

What is a backend?

Accepted Answer

The backend is the part of an app that runs out of sight on another computer, doing the work you asked for and keeping the data.

Question 2

What is a real-life example of backend?

Accepted Answer

In a restaurant, the kitchen is the backend. You never walk in there, but it is where your order is actually made.

Question 3

In the restaurant model, which part is the backend?

Accepted Answer

The kitchen is the backend: it is hidden from guests and does the real work. The menu is the frontend and the waiter is the API.

Question 4

You tap "Pay" in a shopping app. Which job happens in the backend?

Accepted Answer

Charging a card and saving the order happen in the backend, where it is safe and the data is kept. Buttons, fonts and layout are frontend jobs.

Question 5

Is each job done by the frontend or the backend?

Accepted Answer

The frontend shows things and reacts to taps. The backend checks rules (like discount codes) and does jobs like sending emails.

What is a backend?

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