Cloud computing

Cloud
Computing
Masha Athukorala
Department of Physical Sciences
Faculty of Applied Science
Sabaragamuwa University of Sri Lanka

 Introduction.
 Definition.
 History of cloud computing.
 Characteristics of cloud computing.
 Cloud computing architecture.
 Cloud service modals.
 Types of cloud.
 Applications of cloud computing.
 Advantages and Disadvantages.
 Conclusion.
 References.
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Table of Content

Introduction
In Past In Present
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 Cloud computing is an emerging computing
technology that uses the internet and central remote
servers to maintain data and application.
Definition
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History of Cloud Computing
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 Application programming interface
 Device and location independence
 Virtualization
 Reliability
 Maintenance
 Security
 Performance
 Agility
Characteristics of Cloud Computing
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Cloud Computing Architecture
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 There are three models in cloud computing,
 Infrastructure as a Service(IaaS)
 Platform as a Service(PaaS)
 Software as a Service(SaaS)
Cloud Service Models
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 Public Cloud
Owned and managed by service provider.
to the general public or a large industry group.
 Private Cloud
Operated solely for an organization.
May be managed by the organization or third party.
Limit access to enterprise and partner network.
Retains high degree of control , privacy and security.
Types of Cloud
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 Community Cloud
• Shared infrastructure by several organizations which
have shared concerns.
• May be managed by the organizations or a third party.
• Costs are spread over fewer users than a public cloud
but more than a single tenant.
 Hybrid Cloud
• Composition of two or more clouds(private,
community or public) bound together by standardized
or proprietary technology that enables data and
application portability.
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Applications of Cloud Computing
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Applications of Cloud Computing
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Advantages and Disadvantages
Advantages
1. Lower computer costs.
2. Improved performance.
3. Reduced software costs
4. Instant software updates
5. Unlimited storage capacity.
6. Increased data reliability
7. Latest version availability.
8. Device Independence.
Disadvantages
1. Requires constant internet
connection.
2. Does not work well with low
speed connections.
3. Features might be limited.
4. Can be slow.
5. Stored data might not be sure.
6. Stored data can be lost.
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 Cloud computing is the fastest growing part of network
based computing . It provides tremendous benefits o
customers of all sizes:
 Simple users , developers , enterprises and all types of
organizations.
Conclusion
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 http://searchcloudcomputing.techtarget.com/definition
/cloud-computing.
 http://www.buyya.com/papers/AnekaCloud-CSI-
India2011.pdf
 http://www.tutorialspoint.com/cloud_computing/cloud
_computing_architecture.html
 http://www.slideshare.net/Rkmishra00/cloud-
computing-32035613
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References

Cloud computing

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