Behind the Scenes of Web Applications | The Building Blocks of Modern Web Applications

In this video, we go behind the scenes of modern web applications and explore how scalable systems are built in the real world 🌐

You’ll learn how different layers of a web application work together, from the moment a user opens a website to the point where a response is sent back with high performance and reliability ⚙️

We start with the frontend layer, where users interact with the application through visual components like buttons, pages, and layouts 🎨

Then we move to backend services, which act as the engine of the application by processing requests, applying business logic, and communicating with the database 🧠

You’ll also understand what servers are, how applications are hosted, and why web servers are responsible for serving static content like HTML, CSS, JavaScript, images, and videos 🖥️

Next, we break down the role of reverse proxies and how they route requests to the correct backend services when dynamic processing is required 🔁

As traffic grows, load balancers become critical. You’ll see how they distribute incoming requests across multiple servers to improve performance, scalability, and reliability 🚦

Finally, we explore CDNs and how they cache content closer to users around the world to deliver faster responses and reduce server load 🌍

By the end of this video, you’ll have a clear mental model of how modern web applications are structured and how each layer contributes to building scalable, high-performance systems 🚀

If you’re preparing for technical interviews, learning system design, or aiming to build real-world web applications, this video will give you a strong foundation 💡

Feel free to drop your questions in the comments and subscribe for more videos on web architecture, system design, and scalable application development 🔔