Hi,
In the Azure portal please navigate to your web app, then click on Console blade on left. At the console prompt on the right, please copy/paste in below command and press enter:
powershell (gp HKLM:\HARDWARE\DESCRIPTION\System\CentralProcessor\0).ProcessorNameString
In screenshot below you can see processor name is AMD EPYC 7763 64-Core Processor:
Please click Accept Answer and upvote if the above was helpful.
Thanks.
-TP