What is: Backend

Backend is the part of a webpage or app that users can’t see.  It’s otherwise known as server-side. This part is responsible for the actual logic behind the scenes. While frontend is the user interface, the design which users can see and interact with.

For example, a registration form with fields to fill is the frontend. When a visitor clicks a button and submits the form, backend processes the request:

  • validates the fields
  • saves data in database
  • sends verification email
  • returns a message to the browser

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