What Is the Internet and How Does It Work?

Right now, as you look at this page, your device is connected to billions of other devices around the world — all sharing information in fractions of a second. That invisible connection is called the internet. Understanding how it works helps you use it more confidently and safely.

What is the internet?

• The internet is a global network of computers and devices all connected to each other.
• Think of it like a giant city of roads — any computer can reach any other computer by following the right roads.
• It carries many different types of information: web pages, emails, videos, games, and more.

How does data travel?

• When you type a web address, your device sends a request along wires, cables, or wireless signals.
• The request reaches a server — a powerful computer that stores website data and responds to requests.
• The server sends the web page data back to your device, usually in less than a second.
• Data travels as tiny digital packets — each packet may take a different route and they are reassembled at the other end.

How devices connect

• Wi-Fi — wireless connection through a router in your home or library.
• Cable / fiber — very fast wired connection, often used for home broadband.
• Mobile data — connection through cell phone towers (4G/5G).

Internet vs. World Wide Web

• The internet is the physical network of cables, wires, and connected devices — the infrastructure.
• The World Wide Web (WWW) is the collection of web pages and websites that you access through the internet using a browser.
• A browser (e.g., Chrome, Safari, Edge) is the app you use to view web pages.
• Simple analogy: the internet is like the road system; the WWW is like the buildings along those roads; the browser is your car.