Cloud computing ppt

Outline:
 What is Cloud Computing?
 History
 Why Cloud Computing?
 Services provided by Cloud Computing
 Cloud Architecture
 Cloud Computing Behaviour
 Advantages & Disadvantages

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DEFINITION:
 “Cloud” is simply a
metaphor for the
internet.
 Users do not need
knowledge, control,
ownership in the
computer infrastructure
 Users simply rent or
access the software,
paying only16-Jan-12what
for
they use

HISTORY:
 Concept dating back to the 1960’s by
John McCarthy, a computer scientist,
brought up the idea that "computation
may someday be organized as a public
utility”
 Idea that revolutionized Cloud
Computing:
– Utility computing

– Grid computing

 “In some ways, the cloud is a natural
next step from the grid-utility model,”
said Frank Gens, an analyst at the
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research firm IDC

SERVICES:

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How Cloud Computing
Works?
 In a cloud computing system, there's a
significant workload shift. Local computers
no longer have to do all the heavy lifting
when it comes to running applications. The
network of computers that make up the
cloud handles them instead. Hardware and
software demands on the user's side
decrease. The only thing the user's
computer needs to be able to run is the
cloud computing system's interface
software, which can be as simple as a Web
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browser, and the cloud's network takes care

Architecture:

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The success of cloud computing is largely based on the
effective implementation of its architecture
. In cloud computing, architecture is not just based on how
the application will work with the intended users. Cloud
computing requires an intricate interaction with the hardware
which is very essential to ensure uptime of the application.
DATA CENTRES
One of the most distinguishing characteristics of cloud
computing architecture is its close dependency on the
hardware components. An online application is just a simple
application that could be launched in different servers but
when the application is considered with cloud computing, it
will require massive data centres that will ensure the
processes are done as expected and timely.The data centre
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Cloud Computing Behaviour

 The behaviour of cloud computing is highly dynamic
where the only the process would be possible is
through proper interaction of application & hardware.
 Aside from the ability to adapt to the number of users
and data requests, cloud computing should have the
ability to work with different form of resources. Most well
known service providers do not rely their operations in
one service centre alone. They would usually come with
two or more server farms – infrastructure with multiple
and massive servers.

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ADVANTAGES &
DISADVANTAGES

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Advantages
 First advantage is the ease of troubleshooting. A
specific software installed in the local gadget would
need to have a repair from the company’s tech
group. But when the company uses cloud
computing, any “bugs”, user problems or error in
function could be immediately looked into by its
developers. There is no need for every user to wait
for their turn to have their application fixed.

 There is also the monetary consideration in cloud
computing. There will be eventual savings the
company would experience through cloud
computing. Instead of tedious work with local
connections and additional infrastructure, a
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company would just consider a cloud computing

Disadvantages:
The biggest disadvantage of cloud computing all is
security issue. Since cloud computing uses the power
of online connectivity to handle processing requests,
the data could be available for everyone and could be
used for malicious purposes.
There is also the challenge of the end-user
connectivity. Cloud computing will only be possible if
there is a strong internet connection. Cloud computing
might not work in areas where internet connection is
weak.
Infrastructure is also a challenge for cloud computing.
A company who opts to have their own server would
have to ensure the infrastructure will be able to deal
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Wide Spectrum of Usage
 Bit Torrent
 Skype
 LinkedIn
 YouTube
 Google
 Microsoft
 Forums
 Blog‐space
 Website Hosting
 FaceBook
 Yahoo
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ANY QUESTIONS?

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Cloud computing ppt