cloud computng
DESCRIPTION
TRANSCRIPT
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CLOUD COMPUTNG
Cloud computing
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WHAT IS CLOUD COMPUTING ??
An emerging computer paradigm where data and services reside in massively scalable data centers in the cloud and can be accessed from any connected devices over the internet.
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DO YOU USE THE CLOUD?
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NEED OF CLOUD COMPUTING
4) Cost 5) Security
2) Availability
3)Maintenance
End Users
1) Scalability
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SO WHAT A CLOUD COMPUTING?
A distributed computation model which offers managed, scalable, secured, highly-available computation resources and software as a service.
Computing and software resources that are delivered on demand, as service.
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BACK STORY [FROM GROUND TO CLOUD]
Computers have internal or hard drive storage for storing pictures, documents etc.
To access this data you come to that computer only not accessible from another.
External storage: That allows the data to be mobile through pendrives, CD.
Networked storage: In this data stored in network drive which can be accessible from any workstations connected to the network.
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Cloud storage: Content lives with the account in the cloud, Log onto any computer with Wi-Fi to find your content.
It’s a type of app on your computer when you make change or addition it saves to the app then when you connected to the internet it sync with the cloud and data get stored in cloud.
Other than storage it provide software and other application services like document creation in Google doc.
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TYPES OF CLOUD
1] Private cloud This type of cloud is maintained within an
organization and used solely for their internal purpose. So the utility model is not a big term in this scenario.
2] Private cloud In this type an organization rents cloud
services from cloud providers on-demand basis. Services provided the users using utility computing model.
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3] Hybrid cloud This type of cloud is composed of multiple
internal or external cloud. This is the scenario when an organization moves to public cloud computing domain from its internal private cloud.
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ARCHITECTURE
Physical machines
Data centers
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TYPES OF SERVICES
1] SaaS (Software as a service)2] PaaS (Platform as a service)3] IaaS (Infrastructure as a Service)
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SAASDelivers a single application through the web
browser to thousands of customers using a multitenant architecture. On the customer side, it means no upfront investment in servers or software licensing on the provider side, with just one application to maintain, cost is low compared to conventional hosting. Under SaaS, the software publisher (seller) runs and maintains all necessary hardware and software.
Eg. Google docs is also a very nice example of SaaS where the users can create, edit, delete and share their documents, spreadsheets or presentations whereas Google have the responsibility to maintain the software and hardware.
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PAAS
Delivers development environment as a service.
One can build his/her own applications that run on the provider's infrastructure that support transactions, uniform authentication, robust scalability and availability. The applications built using PaaS are offered as SaaS and consumed directly from the end users' web browsers. This gives the ability to integrate or consume third-party web-services from other service platforms.
E.g. - Google App Engine.
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IAAS
IaaS service provides the users of the cloud greater exibility to lower level than other services. It gives even CPU clocks with OS level control to the developers.
The cloud computing vendors offer infrastructure as a service. One may avail hardware services such as processors, memory, networks etc on agreed basis for specific duration and price.
E.g. - Amazon EC2 and S3.
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EXAMPLE : AMAZON SIMPLE STORAGE SERICE
Unlimited Storage. Pay for what you use:
$0.20 per GByte of data transferred, $0.15 per GByte-Month for storage used, Second Life Update:
1TBytes, 40,000 downloads in 24 hours - $200
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ADVANTAGES
Lower computer cost Improved performance Reduced software cost Instant software updates Improved document format compatibility Unlimited storage capacity Increased data reliability Universal document access Latest version availability Easier group collaboration Device independence
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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
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A LITTLE STORY OF CLOUD COMPUTING
Once upon a time…I’m Distributed Computing I allow computations to run on several networked computers I’m cool!
I’m Utility Computing I package computing resources as a metered service I’m economic
Cloud Computing
They fell in love, and had a child…
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CONCLUSION
Cloud‖ computing builds on decades of research in virtualization, distributed computing, utility computing, and more recently networking, web and software services. It implies a service oriented architecture, reduced information technology overhead for the end-user, great flexibility, reduced total cost of ownership, on demand services and many other things.
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Thank you