Could you explain what a virtual host is in the context of web servers?

A virtual host is a way to configure a single web server to serve multiple different sites or domains.

For example, you have one server with an IP address, but you want it to respond to requests for the sites example.com and example.org, showing different pages for each.

The web server looks at the request header (Host) and directs the user to the appropriate site based on it.

This is convenient because it allows saving resources and managing multiple sites on one server without the need to allocate a separate IP for each.