Cloud computing Definitions

  • O

    OpenStack Horizon

    OpenStack Horizon is a web-based graphical interface that cloud administrators and users can access to manage OpenStack compute, storage and networking services.

  • OpenStack Innovation Center

    The OpenStack Innovation Center is a research and development facility dedicated to the open source cloud platform OpenStack. Rackspace and Intel opened the center in September 2015.

  • P

    Platform as a Service (PaaS)

    Platform as a service (PaaS) is a cloud computing model in which a third-party provider delivers hardware and software tools -- usually those needed for application development -- to users over the internet.

  • private cloud (internal cloud or corporate cloud)

    Private cloud (also called internal cloud) is a marketing term for an enterprise computing architecture that's protected by a firewall. Promotion of the private cloud model is designed to appeal to an organization that wants more control over their data than they can get by using a third-party hosted service such as Amazon's Elastic Compute Cloud (EC2) or Simple Storage Service (S3). (Continued)

  • public cloud

    A public cloud is one based on the standard cloud computing model, in which a service provider makes resources, such as virtual machines (VMs), applications or storage, available to the general public over the internet.

  • R

    Rackspace Fanatical Support

    Rackspace Fanatical Support is Rackspace's customer service program, which provides support for customers using its managed hosting services and cloud platforms.

  • RightScale Inc.

    RightScale is a software as a service (SaaS) provider that offers cloud management and analytics tools for public, private and hybrid clouds.

  • S

    Scalr

    Scalr is an information technology (IT) vendor that offers a management platform for cloud computing.

  • shadow IT

    Shadow IT is hardware or software that is not supported by an organization's IT department.  The term often carries a negative connotation because it implies the IT department has not approved the technology or doesn’t even know that employees are using it.

  • sharding

    Sharding is a type of database partitioning that is used to separate very large databases the into smaller, faster, more easily managed pieces called data shards.

  • shared responsibility model

    A shared responsibility model is a cloud security framework that dictates the security obligations of a cloud computing provider and its users to ensure accountability.

  • Software as a Service (SaaS)

    Software as a service (SaaS) is a software distribution model in which applications are hosted by a vendor or service provider and made available to customers over a network, typically the Internet.

  • SPI model (SaaS, PaaS, IaaS)

    SPI is an acronym for the most common cloud computing service models, Software as a Service, Platform as a Service and Infrastructure as a Service.

  • subscription-based pricing model

    A subscription-based pricing model is a payment structure that allows a customer or organization to purchase or subscribe to a vendor's IT services for a specific period of time for a set price.

  • T

    TOSCA (Topology and Orchestration Specification for Cloud Applications)

    The Topology and Orchestration Specification for Cloud Applications (TOSCA) is an open-source language used to describe the relationships and dependencies between services and applications that reside on a cloud computing platform.

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