SaaS, PaaS, and IaaS: The differences.
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As a service
According to 451 Research analyst Carl Brooks, for a technology solution to qualify as "as a Service," it has to meet
the National Institute of
Standards and Technology (NIST) definition parameters, which he paraphrased as "self-service, paid on-demand,
elastic, scalable,
programmatically accessible (APIs), and available over the network."
SaaS had a major impact on the way companies consume cloud services.
This ebook looks at how the as a service
trend is spreading and
transforming IT jobs.
In a general sense, the cloud is divided into three distinct layers: Software as a Service (SaaS), Platform as a Service
(PaaS), and Infrastructure
as
a Service (IaaS).
The fundamental model of cloud computing that underpins all three of these layers is a service
rental model, according to
Forrester Research principal analyst Dave Bartoletti.
"You are renting infrastructure, or you are renting
development platforms and tools, or
you are renting software.
That's IaaS, PaaS, and SaaS," Bartoletti said.
Here's a brief explanation of each layer, and how they impact the business please follow the link to see the
complete information.
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