Cloud Computing

INTRODUCTION
• With traditional desktop computing, we run copies of software programs on our own
computer.The documents we create are stored on our own pc.
• Although documents can be accessed from other computers on the network, they can’t be
accessed by computers outside the network.This is PC-centric.
• With cloud computing, the software programs one use aren’t run from one’s personal
computer, but are rather stored on servers accessed via the Internet.
• If a computer crashes, the software is still available for others to use. Same goes for the
documents one create; they’re stored on a collection of servers accessed via the Internet.
• Anyone with permission can not only access the documents, but can also edit and
collaborate on those documents in real time.
• Unlike traditional computing, this cloud computing model isn’t PC-centric, it’s document-
centric.

WHAT IS CLOUD COMPUTING?
• Cloud computing is a type of computing that relies on sharing computing resources
rather than having local servers or personal devices to handle applications.
• In cloud computing, the word cloud (also phrased as "the cloud") is used as a
metaphor for "the Internet," so the phrase cloud computing means "a type of
Internet-based computing," where different services such as servers, storage and
applications are delivered to an organization's computers and devices through the
Internet.
• Cloud computing is comparable to grid computing, a type of computing where
unused processing cycles of all computers in a network are harnesses to solve
problems too intensive for any stand-alone machine.

WHY CLOUD COMPUTING?
• User centric
• Task Centric
• Powerful
• Self Healing
• Multi-tenancy & Intelligence
• Programmable
• Flexible

CLOUD SERVICE MODELS
1. SOFTWARE AS A SERVICE (SaaS):
Applications hosted by a provider on a cloud infrastructure are accessed from thin or thick
clients over the network or a program interface (for example, web services). Examples are
Google Docs, IBM SmartCloud Docs, IBM SmartCloud Meetings, Saleforce.com’s CRM
application and so on.
2. PLATFORM AS A SERVICE (PaaS):
Providers deliver not only infrastructure but also middleware (databases, messaging engines
and so on) and solution stacks for application build, development and deploy. IBM
SmartCloud Application Services and GoogleApp Engine are two examples of PaaS.
3. INFRASTRUCTURE AS A SERVICE (IaaS):
It is the delivery of computing infrastructure as a service. IBM SmartCloud
Enterprise+, SoftLayercloud and Amazon EC2 are some examples of IaaS.

CLOUD PROVIDERS
•AmazonWeb Services
•Google Compute Engine
•CloudBees
•Rackspace
•CloudSigma

CLOUD STORAGE
Cloud storage means "the storage of data online in the cloud," wherein a company's
data is stored in and accessible from multiple distributed and connected resources
that comprise a cloud.
TYPES OF CLOUD STORAGE
1. PersonalCloud Storage
2. Public Cloud Storage
3. Private Cloud Storage
4. Hybrid Cloud Storage

ADVANTAGES
• Lower computer costs
• Improved performance
• Reduced software costs
• Instant software updates
• Improved document format compatibility
• Unlimited storage capacity
• Increased data reliability
• Universal document access
• Latest version availability
• Easier group collaboration
• Device independence

DISADVANTAGES
• Requires a constant Internet connection
• Does not work well with low-speed connections
• Features might be limited
• Can be slow
• Stored data might not be secure
• Stored data can be lost

CONCLUSION
Like everything else, cloud computing too has its pros and cons. While the
technology can prove to be a great asset to your company, it could also cause harm
if not understood and used properly.
Cloud Computing is a vast topic and the above report does not give a high level
introduction to it. It is certainly not possible in the limited space of a report to do
justice to these technologies.
Cloud Computing is a technology which took the software and business world by
storm.The much deserved hype over it will continue for years to come.

THANKYOU
imRohit46.blogspot.com

Cloud Computing

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