Hello @Mathias Rönnlund ,
Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.
I understand that you would like to use Apex domain hosted in Azure DNS with Azure Front Door Standard/Premium and want to know if this will be supported.
I discussed this feature requirement with the Azure Front Door Product Group team and looks like they are already working on this feature and the current ETA for it's support release is end of June 2022 (may change depending upon the complexity of the feature enablement).
Kindly let us know if the above helps or you need further assistance on this issue.
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