About web hosting

In order for your website to be accessible by your visitors on the Internet, you need to host it with a webhost, i-e a company that has web servers connected to the internet 24x7. Web hosting companies have thousands of such servers in data centers.

Those servers can be dedicated to a specific site ("dedicated servers" - which is expensive) or shared between several clients and web sites (which is much more affordable). This is called "shared web hosting".