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2.2 Service Models

2.2.1 Cloud Infrastructure as a Service (IaaS)

The capability provided to the consumer is to provision processing, storage, networks, and

other fundamental computing resources where the consumer is able to deploy and invoke

arbitrary software, which can include operating systems and applications. The consumer does

not manage or control the underlying cloud infrastructure but has control over operating

systems, storage, deployed applications, and possibly limited control of select networking

components (e.g., host firewalls).

2.2.2 Cloud Platform as a Service (PaaS)

The capability provided to the consumer is to deploy onto the cloud infrastructure consumer-

created or acquired applications created using programming languages and tools supported

by the provider. The consumer does not manage or control the underlying cloud infrastructure

including network, servers, operating systems, or storage, but has control over the deployed

applications and possibly application hosting environment configurations.

2.2.3 Cloud Software as a Service (SaaS)

The capability provided to the consumer is to use the provider’s applications running on a

cloud infrastructure. The applications are accessible from various client devices through a thin

client interface such as a web browser (e.g., web-based email). The consumer does not

manage or control the underlying cloud infrastructure including network, servers, operating

systems, storage, or even individual application capabilities, with the possible exception of

limited user-specific application configuration settings.

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