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Cloud computing (CC) is the provision of
dynamically scalable and often virtualised
resources as a service over the Internet on a
utility basis
- Users need not have knowledge of, expertise
in, or control over the technology infrastructure
in the "cloud" that supports them.
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Cloud Computing - Terms
- Scalability is a desirable property of a system,
a network, or a process, which indicates its
ability to either handle growing amounts of work
in a graceful manner or to be readily enlarged
- Virtualization is a term that refers to the
abstraction of computer resources (ex: Virtual
machine (VM), a software implementation of a
machine (computer) that executes programs like a real
machine)
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Cloud Computing - Definition
- Cloud computing services often provide
common business applications online that are
accessed from a web browser, while the
software and data are stored on the servers.
- Clouds have five essential characteristics: ondemand
self-service, broad network access,
resource pooling, rapid elasticity, and measured
service.
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CC - Key characteristics
Agility
- improves with users able to rapidly and
inexpensively re-provision technological
infrastructure resources. The cost of overall
computing is unchanged, however, and the
providers will merely absorb up-front costs and
spread costs over a longer period.
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