The first OS installed in a computer. In a virtual machine environment, there may be a host operating system that interacts with the virtual machine monitor, which manages the virtual machines.
An SCL program can issue any command that is valid for the operating system under which an application runs. SCL places no restrictions on commands that are issued to an operating system, nor does SCL ...
The more VMs running in the server at the same time, the more the entire system slows. However, containers communicate directly to the host operating system just as in a non-virtualized computer ...