Microsoft office 365 integrated with web hosting company GoDaddy and with this integration, users can easily purchase domain name from GoDaddy without any hassle.
According to source,
“You can now purchase a custom Go Daddy domain name directly from within Office 365 and we’ll automatically set it up for you. If your organization already has a Go Daddy managed domain name, you can update Office 365 to start using that domain name directly from within Office 365, too.
Your Go Daddy purchase is integrated with Office 365, so completing your purchase is fast and convenient. Once the purchase is complete, the Go Daddy DNS records are updated on your behalf for use with Office 365, so you can begin using your custom domain name for your email addresses and website right away.
If your organization already has a domain purchased from Go Daddy, you can use the Add a domain wizard to automatically set up Office 365. Read more and watch the video about easily bringing your custom Go Daddy domain to Office 365.”
[Source] Office