: How did you set up your DNS records for an Azure Cloud Application I would like some advice. I want to be able to have my zone apex and also www point to a cloud application that is

@Sue5673885

You should never use a CNAME for your root domain name in my opinion so I would go with your 2nd example.

A xx.com > 123.456.789
A xx.com > xx.com


Although it is debatable I would say to answer your question specifically, whilst on the same domain (i.e. subdomains) it would be perfectly fine to use a CNAME however in the case of Azure you would be pointing it to another domain would be incurring the extra dns lookup required and thus slow the time taken for the request to be completed.
Taking that into consideration, your 3rd example would be perfectly fine as well.

A xx.com > 123.456.789
CNAME xx.com > xx.com


Some large websites seem to mainly use A records so I would probably stick to those unless you are planning on changing IPs often.

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