Automatic scaling up/down virtual machines very limited
Automatic scale up of virtual machines seems to be very limited in Azure:
a) it does only work for certain types of virtual machines
b) you can only scale up/down to a single other point, which is predefined by Azure
c) you cannot control details e.g. amount of vcpu or ram
Also, getting automatic vertical scaling to work needs one to get pretty involved. You have documentation about this topic, but somehow documentation is confusing and you don't find easily where to start / what to do in what order.