Why we need Middleware in Backend

🎥 Day 13 – What is Middleware in Express.js | Express.js Tutorial for Beginners

In this video, we’ll learn everything about Middleware in Express.js — one of the most important concepts for building Node.js applications. If you’re learning Express.js or backend development, this lesson is a must-watch!

You’ll understand:
👉 What middleware is in Express.js
👉 Why middleware is used in Node.js applications
👉 How the request–response cycle works with middleware
👉 Different types of middleware (built-in, application-level, router-level, third-party)
👉 How to create and use your own custom middleware
👉 Real-world use cases like authentication, logging, and error handling

By the end of this video, you’ll know exactly how middleware works and how to use it effectively in your Express apps.

💻 Topics covered:

What is Middleware in Express.js

How Middleware functions work

Types of Middleware in Express.js

How to use custom Middleware

Using third-party Middleware in Node.js

Middleware for authentication and error handling

📘 About this series:
This video is part of the 30 Days Express.js Series, where we learn Express step by step — from beginner to advanced.
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