A web host is a company that has computers that are hooked up to the internet 24/7. These computers are called servers and they are assigned IP numbers in order that they may be found by other computers hooked up to the internet. It is on these servers that all your web files are stored, be they HTML files (web pages), graphic files, CSS files, Java scripts or whatever.

These web hosting servers that store and serve up web pages to the internet cost money to set up, configure and maintain and thus web hosting providers that own these servers typically charge you a monthly or yearly fee to, at the very least: