Imagine the internet as the world's road network — millions of roads connecting every city on Earth. The World Wide Web is just one vehicle using those roads: a vast library of web pages. You can also use the same roads to send email, make calls, or stream video — not just visit the library.
What is the internet?
The internet is a global network of billions of interconnected devices — computers, phones, servers, smart TVs, and more — linked by physical cables (copper, fibre optic) and wireless signals (Wi-Fi, 4G, 5G). It is the infrastructure: the physical and logical plumbing that allows data to travel anywhere in the world.
The internet carries many different services, including:
- The World Wide Web (websites and web pages)
- Email (SMTP, IMAP protocols)
- File transfer (FTP)
- Video streaming (Netflix, YouTube)
- Online gaming (real-time data exchange)
- Voice calls (VoIP — Voice over Internet Protocol)
All of these services share the same underlying internet infrastructure. The internet is not one of them — it is the network they all run on top of.
What is the World Wide Web?
The World Wide Web (WWW) is a system of interlinked web pages and multimedia content stored on web servers and accessed through web browsers. It was invented by Sir Tim Berners-Lee in 1989 while he was working at CERN in Switzerland.
Three technologies make the Web work:
| Technology | Full name | Role |
|---|---|---|
| URL | Uniform Resource Locator | The address of a web page: https://aitutors.me/faculty/professor-pi |
| HTTP/HTTPS | HyperText Transfer Protocol (Secure) | The ruleset (protocol) for requesting and delivering web pages |
| HTML | HyperText Markup Language | The language used to write the content of web pages |
When you type a URL into a browser, your device sends an HTTP request across the internet to the server where that page is stored. The server sends back the HTML (and any images, CSS, or JavaScript), and your browser renders it into the page you see.
What is the key difference in summary?
| Internet | World Wide Web | |
|---|---|---|
| What it is | A global network of connected devices | A collection of web pages and resources |
| Created by | Developed gradually from the 1960s (ARPANET) | Invented by Tim Berners-Lee in 1989 |
| Physical? | Yes — cables, routers, satellites | No — it exists as data on servers |
| Accessed via | Any internet-connected device or app | A web browser (Chrome, Firefox, Safari …) |
| Protocol | TCP/IP | HTTP / HTTPS |
A simple test: sending an email uses the internet but not the World Wide Web. Watching a YouTube video uses both — the Web delivers the page and the player, and the internet carries the data.
What is a web browser and what does it do?
A web browser is a software application that:
- Accepts a URL from the user.
- Sends an HTTP/HTTPS request via the internet to the appropriate web server.
- Receives the HTML, CSS, and JavaScript files in response.
- Renders (draws) those files into the visual page you see on screen.
- Handles links, forms, media, and security (checking HTTPS certificates).
Popular browsers include Google Chrome, Mozilla Firefox, Microsoft Edge, and Safari. Each renders the same HTML slightly differently, which is why web designers must test their pages in multiple browsers.
What role does HTTP and HTTPS play?
HTTP (HyperText Transfer Protocol) defines the format of messages between your browser (the client) and the web server. An HTTP request says "please give me the page at /about"; the HTTP response contains the page's code plus a status code:
200 OK— the page exists and is being sent.404 Not Found— the page does not exist at that address.301 Moved Permanently— the page has moved to a new URL.
HTTPS adds a layer of encryption (using TLS). Data travelling between your browser and the server is scrambled so that nobody intercepting the connection can read it. You can see whether a site uses HTTPS by looking for the padlock icon in the browser address bar.
Why does the distinction matter for your computing exam?
Examiners in KS3 and GCSE assessments test whether students can correctly distinguish between the internet and the WWW. Common question patterns:
- "Give one example of an internet service that is not the World Wide Web." (Email, VoIP, online gaming.)
- "Explain the role of HTTP in accessing a web page."
- "Who invented the World Wide Web? What three technologies did he use?"
Frequently asked questions
Who invented the internet?
The internet grew from ARPANET, a US military research network developed in the late 1960s. Many engineers contributed, but Vint Cerf and Bob Kahn are often credited for designing TCP/IP (the core communication protocols) in the 1970s. Tim Berners-Lee invented the World Wide Web in 1989 — a separate achievement.
Is Wi-Fi the same as the internet?
No. Wi-Fi is a wireless technology that connects your device to a local router. The router then connects to the internet via your broadband provider. Wi-Fi is how you reach the internet — not the internet itself.
Can I use the internet without a browser?
Yes. Email apps, gaming apps, file-sharing software, and streaming apps all use the internet without using a web browser. The browser is only needed for the World Wide Web.
What does "HTTPS" mean and why does it matter?
HTTPS is HTTP with TLS encryption added. The padlock icon means that data sent between your browser and the server is encrypted, protecting passwords, payment details, and personal information from being intercepted in transit. Always check for HTTPS before entering sensitive information on a website.
Confused about which protocols do what? Visit aitutors.me and let Professor Turing build your understanding of how the internet layer by layer.