A domain name provides you an entry point to the online world. You cannot build and maintain a website without a domain name. It gives an identity to your brand for which you are creating a website and your website will be known by this domain name for times to come. For instance, our domain name can be found in the address bar of this web page.
Our website is known by this name both among people like you and search engines like Google. So, a domain name becomes the identity of a website just like our names provide us our identities. It is, therefore, essential to select your domain name wisely since you cannot change it later.