Comtech can provide and support Platform as a Service (PaaS) to help clients develop, run, and manage operations
A server administrator or admin has the overall control of a server. This is usually in the context of a business organization, where a server administrator oversees the performance and condition of multiple servers.
Under the time-sharing model resources are still shared, however, virtualization provides a higher level of security, dependent on the type of virtualization used. The individual virtual servers are mostly isolated from each other and may run their own full-fledged operating system which can be independently rebooted as a virtual instance