DNS, which stands for domain name system,
controls your domain name's website and email settings. When visitors go
to your domain name, its DNS settings control which company's server it reaches out to. For example, if you use GoDaddy's DNS settings, visitors will reach GoDaddy's servers when using your domain name.
https://www.youtube.com/watch?v=2ZUxoi7YNgs
https://www.youtube.com/watch?v=2ZUxoi7YNgs