Summary  
This chapter introduces the client–server architecture, explaining how devices (clients) request resources from servers over a network and how the Internet connects millions of devices to enable seamless data exchange.

General domain of usage  
Web development

The Internet is often misunderstood by some people as a cloud floating in the sky, making it difficult to comprehend. However, this belief is untrue.

### Internet
The **Internet** is a global network that connects millions of computers and devices through a vast system of wires. It enables seamless communication and information sharing between devices, allowing a computer in New York to exchange data with another computer in London easily.

### Client - Web Server
The **Client** represents the user's device, such as a phone, computer, laptop, tablet, TV, or any other device used to access a website.

On the other hand, the **Web Server** provides data to users, serving as a readily available library that supplies the necessary files and information for effective interaction with websites.


What is the primary function of a Web Server in the context of the Internet?

Understand how the web works and how websites are built. Explore the Internet, how pages are delivered, and the difference between frontend and backend development.

What Is the Internet?

Internet

Client - Web Server