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2. Virtual private server - Wikipedia

   en.wikipedia.org/wiki/Virtual_private_server

   A virtual private server (VPS) is a virtual machine sold as a service by an Internet hosting service. [1] The term "virtual dedicated server" (VDS) has a similar meaning.A virtual private server runs its own copy of an operating system (OS), and customers may have superuser-level access to that operating system instance, so they can install almost any software that runs on that OS.

3. Rackspace Cloud - Wikipedia

   en.wikipedia.org/wiki/Rackspace_Cloud

   The Cloud Servers API launched on July 14, 2009, under the Creative Commons Attribution 3.0 license allows clients to create, configure and control virtual servers. [19] In addition to issuing basic management commands this "enables elastic scenarios" whereby servers are instantiated and destroyed in response to fluctuating load (one of the key ...

4. Virtual hosting - Wikipedia

   en.wikipedia.org/wiki/Virtual_hosting

   Virtual hosting is a method for hosting multiple domain names (with separate handling of each name) on a single server (or pool of servers). [1] This allows one server to share its resources, such as memory and processor cycles, without requiring all services provided to use the same host name.

5. Amazon Elastic Compute Cloud - Wikipedia

   en.wikipedia.org/wiki/Amazon_Elastic_Compute_Cloud

   [16] [17] Each virtual machine, called an "instance", functions as a virtual private server. Amazon sizes instances based on "Elastic Compute Units". The performance of otherwise identical virtual machines may vary. [18] On November 28, 2017, AWS announced a bare-metal instance, a departure from exclusively offering virtualized instance types. [19]

6. Cloud computing - Wikipedia

   en.wikipedia.org/wiki/Cloud_computing

   Cloud computing attempts to address QoS (quality of service) and reliability problems of other grid computing models. [77] Cloud computing shares characteristics with: Client–server model – Client–server computing refers broadly to any distributed application that distinguishes between service providers (servers) and service requestors ...

7. VMware vSphere - Wikipedia

   en.wikipedia.org/wiki/VMware_vSphere

   VMware vSphere (formerly VMware Infrastructure 4) is VMware's cloud computing virtualization platform. [2]It includes vCenter Configuration Manager, as well as vCenter Application Discovery Manager, and the ability of vMotion to move more than one virtual machine at a time from one host server to another.