Domain Name Registrar Azure. This leverages GoDaddys API but Microsoft bills you. Click Add Custom Domain On the right side you should see the option to add the domain.
After you get your domain name you can create your first Azure AD directory. Azure requires a TXT record to be added with the value provided by them. Click Add Custom Domain On the right side you should see the option to add the domain.
When the domain registration is complete you see a Go to resource button.
This post has been superceded. Azure requires a TXT record to be added with the value provided by them. Its part of a user name or email address for a user part of the address for a group and is sometimes part of the app ID URI for an application. To add a custom domain click Add custom domain.