Furthermore, it is important to introduce another term relevant to web hosting and domain names. We do not have to buy anything here, but it is crucial to know what a DNS does. We talked about web hosting, so there is a computer that hosts our files. We also talked about the domain name, so there is a URL or a name that corresponds to our server's IP address. When a client types our domain name in a web browser, the computer needs to know the IP address. So, a Domain Name Server (DNS) is a system that matches IP addresses with domain names. This is not something that we have to buy, but is something that we or our website administration needs to set up.