As seen in the following image: Restore Backup Advanced Options, when restoring an Azure Web App, we are given the option to "Ignore Conflicting Host Names on Restore".
I find this to be ambiguous.
By allowing restoring of a site that has conflicting hostnames, which of the following is it saying? Or is it implying something else?
The hostnames in the backup will be ignored and the web app will be restored with no hostnames
This is true.
The option Ignore Conflicting Host Names on Restore
is to set a logic when restoring an app with custom domains.
Custom domains are added to the app when it is being restored. If you set it to No, it might fail due to conflicts during the operation. If you set it to Yes, it will remove custom domains automatically when restoring the app successfully.
You could refer to Azure SDK for more detalis.