Cloud computing Definitions

  • R

    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 IT vendor that offers management platforms 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.

  • W

    Windows Azure Fabric Controller (FC)

    The Azure Fabric Controller (FC) is the part of the Windows Azure platform that monitors and manages virtual and physical servers and coordinates resources for software applications.

  • X

    XaaS (anything as a service)

    XaaS is a collective term that stands for a number of things including X as a service, anything as a service or everything as a service. The acronym refers to any of an increasing number of services provided over the Internet that have been traditionally provided locally.

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