For those wondering about alternatives to ALIAS: if you use a www subdomain, then you can simply use CNAMEs. (Though the appearance is a matter of taste...)
Yes, but if someone visits your apex domain directly, you want to redirect him/her to the www version... And if you use cloud based hosting where the IP can change quite often, that's a pain to maintain manually.
Comments
For those wondering about alternatives to ALIAS: if you use a www subdomain, then you can simply use CNAMEs. (Though the appearance is a matter of taste...)
Google, Facebook, etc, all use this approach.
Yes, but if someone visits your apex domain directly, you want to redirect him/her to the www version... And if you use cloud based hosting where the IP can change quite often, that's a pain to maintain manually.