Every computer on the Internet is assigned a unique address, called an IP address. Typically, an IP address looks like 199.123.456.5.
It is very difficult to remember the IP addresses of all the websites we visit every day. It is easier to remember words than strings of numbers. Domain names come into the picture. When you visit a website, it is enough to know its URL. But computers remember numbers, and DNS helps us convert the URL into an IP address that the computer can understand.
When you type domain.com into your browser, it first needs to get the IP address from www.domain.com. The browser then contacts a DNS server to look up the location of the server where the web pages are stored. It’s like an IP address directory service.
As in the classic telephone directory analogy, you need to find the company “OpenZone Studio“, look in the directory and see that it is located in La Fortuna, Costa Rica. You then go to the address to visit the store.