What is the port range for RDP and HTTP Security Group

Which Security Group type does IIS use for secure connections?

Can multiple VMs run on one physical computer?

Yes, by using Hypervisor

What is the advantage of a cloud computer comparing to a physical computer

1. No physical maintenance
2. Highly Scalable
3. No Capital Expenses (pay as you go)
4. No Infrastructure required

Which is better: on-premises or cloud?

Cloud