@prasantc Thank you for reaching out. Sorry to hear about the issue you are facing.
Please see my answers below.
Azure MySQL flexible server deployment in USWest3 fails when Vnet integration is enabled. The docs shows that west us 3 does not support zonal availability but does not mention anything about vnet integration limitation.
You are right, Availability Zone is not available in certains region in Azure.
Would it be possible to deploy Azure MySQL flexible server with public access enabled and user PowerShell or AZcli to enable vent integration after the deployment?
Since it is also not available from my end, I tried to repo this using East US region to deploy MYSQL Flexible. I have selected public access.
Follow this do to create a VNET using CLI.
Create and manage Private Link for Azure Database for MySQL - Flexible Server using CLI (Preview)
Hope that helps.
Please do mark as accept answer if that clarifies your ask. Otherwise comment below if you have additional ask.
Regards,
Oury