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How does web hosting work?

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Quick answer

Web hosting stores your website's files on a server that is always connected to the internet. When a visitor types your domain, the Domain Name System (DNS) translates it into the server's IP address. The visitor's browser then requests the files, and the server sends them back, allowing the page to appear.

Web hosting works by storing a website's files on a powerful computer called a server that stays connected to the internet around the clock. When someone types the site's address, their browser requests those files from the server, which sends them back for display.

Step by step

  1. You choose a web host and a hosting plan that fits your site's needs.
  2. You upload your website's files to the host's server using a file manager or FTP.
  3. You point your domain's DNS records to the server's IP address.
  4. A visitor types your domain into their browser, which asks DNS for the IP address.
  5. The browser sends a request to the server at that IP address.
  6. The server processes the request and returns the files, which the browser displays as your web page.

Key things to understand

  1. A web host rents space on a server, a computer built to run continuously and handle many requests.
  2. The site's files, including HTML, CSS, images and scripts, are uploaded to that server.
  3. The domain name is pointed to the server's IP address through the Domain Name System (DNS).
  4. When a visitor enters the domain, DNS translates it into the server's IP address.
  5. The browser then requests the files, and the server sends them back to be rendered as the web page.

Labelled diagram

  1. Domain name

    The human-friendly address typed into a browser, such as example.com.

  2. DNS lookup

    The domain is translated into the server's numeric IP address.

  3. Web server

    The computer that stores the website's files and waits for requests.

  4. File transfer

    The server sends the requested files back to the visitor's browser.

  5. Browser render

    The browser assembles the files into the visible web page.

How a web page reaches a visitor

Real-world examples

  • A small blog might use shared hosting, where many sites share one server's resources.
  • A growing online store could use a virtual private server (VPS) for more consistent performance.
  • A large news site with heavy traffic often uses dedicated servers or cloud hosting to handle millions of visits.
  • Cloud hosting services like Amazon Web Services or Google Cloud spread a site across many servers for reliability.

Common mistake

✗ Myth: Web hosting means the website is stored on the visitor's computer.

✓ Fact: Web hosting stores the website's files on a remote server that the visitor's browser accesses over the internet. The visitor's computer only temporarily downloads and displays the files; it does not keep the site.

People also ask

What is web hosting in simple terms?
Web hosting is a service that rents space on a server connected to the internet. You put your website's files there, and the server makes them available to anyone who visits your domain. Without hosting, your site would have no place to live online.
How much does web hosting cost?
Costs vary widely by type and provider. Shared hosting is the cheapest, often a few dollars per month. VPS and dedicated hosting cost more because they offer more resources and control. Many hosts also charge extra for a domain name and SSL certificate.
Can i host a website on my own computer?
Yes, you can run a web server on your own computer, but it must stay on and connected to the internet for the site to be reachable. Most home internet connections have dynamic IP addresses and may block incoming traffic, making it unreliable for public websites.
What is the difference between shared, VPS and dedicated hosting?
Shared hosting puts many websites on one server, so resources are split and performance can vary. A virtual private server (VPS) partitions a server so each site gets guaranteed resources. Dedicated hosting gives one website the entire physical server for maximum control and speed.
How does DNS find the right server?
DNS acts like an internet phone book. When you type a domain, a resolver queries a hierarchy of name servers that ultimately return the IP address stored in the domain's DNS records. Your browser then connects to that IP address to fetch the site.
What happens if the web host goes down?
If the host's server fails or loses its internet connection, the website becomes unreachable. Visitors see an error page instead of the site. Many hosts offer uptime guarantees and backup servers to reduce this risk, but outages can still happen.
Do I need to buy a domain name separately from hosting?
Yes, they are separate services. The domain name is your site's address, registered through a domain registrar. Hosting is the server space where your files live. You connect the two by updating the domain's DNS settings to point to your host.

Part of the guide: How the Internet Works →