cloud computing

1. CLOUD COMPUTING
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Md.Shamim Hossain
ID: 153015013
Green University of Bangladesh

2. Introduction:
Cloud computing is where computing resources
are accessed from a virtual online cloud rather
than a local desktop or organizational data centre.
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3. Contents
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 Definition
 Objectives
 Service models
 Characteristics
 Economics Layers
 Types of cloud computing
 Advantages and Disadvantages
 Conclusion

4. Definition
What is Cloud Computing:
Cloud Computing is the use of hardware and
software to deliver a service over a network
With cloud computing, users can access files
and use applications from any device that can
access the Internet.
An example of a Cloud Computing provider is
Google's Gmail.
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Service models
Software as a service (SaaS)
Platform as a service (PaaS)
Infrastructure as a service (IaaS)

7. Characteristics
Characteristics
Virtually
assemble
Pay-per-use
On-demand
self service
Offsite
technology
Shared
workloads
Massive
scale
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8. Economics
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9. Companies are looking for new ways to:
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Reduce costs
• Pay for only what
we use
• Reduce hardware
investment
• Reduce software
licenses
• Lower labor and IT
support costs
• Lower outside
maintenance cost
Faster time to
value
• Quickly take
advantage of
latest
technologies
• Simplify updating
and upgrading
• Increase speed of
deployment
• Scale IT resources
to meet business
needs
Increase reliability
• Improve system
reliability
• Improve system
availability

10. Layers of the cloud
Client
Application
Platform
Infrastructure
Server
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11. Types of cloud computing:
Simplest form
Types of cloud
computing
More complex
form
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12. Simplest form
Search engines
Webmail

13. More complex form
1. Web–based office application.
 Online photo and document sharing
Eg: ZOHO Work Online, Live Mesh
2. Branded, Domain-wide web service.
 Hosted spam filtering
Eg: postini, Google apps, Microsoft Office Live Beta
3. Large-scale web-based storage and computing power for
building your own application.
Eg: Amazon web services, Google app Engine
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14. Advantages and disadvantages
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• Lower software cost
• Improve performance
• Fewer maintenance issue
• Instant software updates
• Increased data safety
Advantages
• Requires a constant internet
connections
• Doesn’t not work well in low
speed connections
• May be slow
• Limited features
Disadvantages

15. Conclusions
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down by delivering appropriate resources only for
the time those resources are needed.
Cloud computing has enabled teams and
organizations to streamline lengthy procurement
processes.
Cloud computing increases profitability by
improving resource utilization. Costs are driven

16. Any Question?
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