A virtual private server (VPS) is a virtual machine sold as a service by an Internet hosting service.
A VPS runs its own copy of an operating system, and customers may have superuser-level
access to that operating system instance, so they can install almost
any software that runs on that OS. For many purposes they are
functionally equivalent to a dedicated physical server,
and being software-defined, are able to be much more easily created and
configured. They are priced much lower than an equivalent physical
server, but as they share the underlying physical hardware with other
VPSs, performance may be lower, and may depend on the workload of other
instances on the same hardware node.
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