Is there no Autoscale log? Validating Autoscale in our S25 environment, and while I do see the reboots occurring, the only evidence in the Event Log is the boot entry. Nothing at all logged like 'Autoscale reboot', etc.

I dont think so. I thought maybe from odata but i dont see anything there either. So might need an RFE

Maybe I spoke too soon, sorta. Get-BrokerHostingPowerAction does show a ShutDown action of IdlePool. Didn't see it in my other VDA, but VMware tools does log a 'Legacy API shutdown' action, too.