A domain is like an online address that people use to find your website on the internet. Just like you have a home address to receive visitors, a website needs a domain name to be found. This name usually includes words or phrases that relate to the website's purpose, making it easy to remember. For example, if your website is about pets, you might choose a name like "mypetinfo.com." The ".com" part is called the top-level domain, and it tells you that it's a commercial site. Having a good domain name is important because it helps attract visitors and makes your website look more professional. Overall, a domain name is a key part of having an online presence.