S - Definitions
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S
shadow IT
Shadow IT is hardware or software within an enterprise that is not supported by the organization's central IT department.
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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.
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single-tenancy
Single-tenancy is an architecture in which a single instance of a software application and supporting infrastructure serves one customer.
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Software as a Service (SaaS)
Software as a service (SaaS) is a software distribution model in which a third-party provider hosts applications and makes them available to customers over the Internet.
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software-defined perimeter (SDP)
A software-defined perimeter, or SDP, is a security technique that controls access to resources based on identity and forms a virtual boundary around networked resources.
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SPI model
The SPI model is an abbreviation of the most common cloud computing service models: software as a service (SaaS), platform as a service (PaaS) and infrastructure as a service (IaaS).
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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.