surely this is CNAME

Its A

A CNAME record maps a specific domain, such as contoso.com or www.contoso.com, to a canonical
domain name. In this case, the canonical domain name is the <myapp>.cloudapp.net domain name
of your Azure hosted application. Once created, the CNAME creates an alias for the
<myapp>.cloudapp.net. The CNAME entry will resolve to the IP address of your
<myapp>.cloudapp.net service automatically, so if the IP address of the cloud service changes, you
do not have to take any action.