In the documentation it stated that ‘the operations that you perform by using the Azure portal and the original management API’ are not included in the Activity logs for Front Door Service. Because of this limitation the Front Door Service doesn’t comply with our monitoring standards.

Is it possible to add these operations to the Activity logs? Is there any work in progress on this issue?

See the note at this page: https://docs.microsoft.com/en-us/azure/frontdoor/front-door-diagnostics#activity-log

Thanks.