About
Hosting is when the domains of a request are not directly associated with the machine's name.
The domains are then called hosted.
Example
Web Hosting
web hosting is when a web/http server is provided to you. You don't need to install it yourself or another entity in your company is taking care of it.
The server uses the host headers to serve your code.
A destination email server (mx) can host several domains. It can therefore receive emails from different domains such as:
Shared
Because IP v4 addresses are scarce, many hosting providers route:
- a net request based on SSL SNI (server name indicator).
- a HTTP request via the Host header