What does "backend" mean in programming?
backend is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
The part of a web application that runs on the server: the business logic, database access, authentication, and APIs that the frontend calls. Backend developers build APIs, design data models, and handle infrastructure concerns. Common backend frameworks: Express, FastAPI, Spring, Rails.
Example
"The frontend sends the form data to the backend API, which validates it, stores it in the database, and returns a response."
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