My Ppt Cloud Computing

7/30/2019 My Ppt Cloud Computing

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Cloud Computing

Cloud computing is Internet-basedcomputing, whereby shared resources,software, and information are provided tocustomers on demand.

It is considered as the 5th generation of

computing after after Mainframe,Personal Computer, Client-ServerComputing, and the web.


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istory The underlying concept of cloud computing dates back to the

1960s, when John McCarthy said that "computation maysomeday be organized as a public utility."

Douglas Parkhill's in1966 explored all the modern-daycharacteristics of cloud computing. He even compared cloud

computing with the electricity industry, in his book TheChallenge of the Computer Utility,

Amazon played a key role in the development of cloudcomputing by modernizing their data centres and by

providing cloud computing to external customers, and

launched Amazon Web Service on utility computing basis in2006.

In 2007, even companies like Google, IBM and a number ofuniversities realized its im ortance.


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Characteristics

Generally, cloud computing customers do notown the physical infrastructure.

They consume resources as a service and payonly for resources that they use.

Sharing computing power among multipletenants can improve utilization of resources asservers are not unnecessarily left idle.

The cloud is becoming increasingly associatedwith small and medium enterprises as in manycases they cannot justify or afford the largecapital expenditure of traditional IT.

With cloud computing, you eliminate thoseheadaches because youre not managing

hardware and software.


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IT Vision

Organization Operations Infrastructure

Improve Productivity

& Innovation

Improve

Efficiency

Reduce

Cost


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Why Cloud Computing1. Flexibility

It allows users to rapidly and inexpensively re-provision

technological infrastructure resources.

2. Cost

It greatly reduces capital expenditure as it is based on

operational expenditure.3. Device and location independence

It enable users to access systems using a web browser

regardless of their location or what device they are using

(e.g., PC, mobile). As infrastructure is off-site and accessed

via the Internet.

4. Sharing of resources

Centralization of infrastructure in locations with lower costs (such

as real estate, electricity, etc.)

Peak-load capacity increases

Utilization and efficiency improvements for systems.


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5. Reliability

It is improved if multiple redundant sites are used, which makes well

designed cloud computing suitable for businesscontinuity and disaster recovery.

6. Security Security could improve due to centralization of data, increased

security-focused resources, etc.,

Security is often as good as or better than under traditional systems,in part because providers are able to devote resources to solving

security issues that many customers cannot afford.

7. Maintenance

Maintenance of cloud computing applications is easier, since they

don't have to be installed on each user's computer. They are easier

to support and to improve since the changes reach the clients

instantly.


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Cloud storage is a model ofnetworked online storage where data is

stored on multiple virtual servers,

generally hosted by third parties, ratherthan being hosted on dedicated servers.

Cloud storage services may be accessed

through a web service application, orthrough a Web-based user interface.

Cloud storage


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Layers

1. Application (SaaS) Cloud application services or "Software

as a Service (SaaS)"

deliver software as a service over

the Internet, eliminating the need to

install and run the application on the

customer's own computers.

It simplifying maintenance and support.

It enabling customers to access

applications remotely via the Web.


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2. Platform(PaaS)

Cloud platform services or "Platform as a

Service (PaaS)" deliver a computing

platform .

It act as a connecting link. It facilitates deployment of applications

without the cost and complexity of buying

and managing the underlying hardwareand software layers.

Examples of Paas are Microsoft Windows

Azure ,Google App Engine.


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1. Public cloud Public cloud or external cloud describes cloud

computing in the traditional main stream sense,whereby resources are dynamically provisioned ona fine-grained, self-service basis over the Internet,via web applications/web services, from an off-sitethird-party provider who bills on a fine-grained utilitycomputing basis.

2. Community cloud

A community cloud may be established whereseveral organizations have similar requirementsand seek to share infrastructure so as to realizesome of the benefits of cloud computing.

Deployment models


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3. Hybrid cloud

A Hybrid cloud environment consisting of

multiple internal and/or external providers. Byintegrating multiple cloud services users may be

able to ease the transition to public

cloud services.

Hybrid cloud can also be defined as combinationof public and community cloud. Hybrid clouds

are often used in real time performance.

A hybrid storage cloud uses a combination ofpublic and private storage clouds. Hybrid

storage clouds are often useful for archiving and

backup functions, allowing local data to be

replicated to a public cloud.


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Advantages

1. Reduced cost Companies need only pay for the storage

they actually use. Companies do not need to install physical

storage devices in their own data center oroffices, which reduces IT and hosting costs.

Storage maintenance tasks, such as backup,data replication, and purchasing additionalstorage devices are offloaded to theresponsibility of a service provider, allowingorganizations to focus on their core business.


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2. Scalability

You can grow or shrink as per yourdemands.

3. Instant

Computing power is there when you need

it. You just have to turn it on whatever you

need is instantly available on cloud.

And if the need goes down you can turn itoff.


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1. Security The relative security of cloud computing

services is a contentious issue which may bedelaying its adoption.

Depending on third-party to ensure thesecurity and confidentiality of data andinformation.

Sensitive information and data cannot behanded over to third party.

Now a days, advanced security is provided bymany vendors, but still it will take at least 5

years to provide high quality security.

Issues


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2. Performance In addition to concerns about security,

businesses are also worried aboutacceptable levels of performance ofapplications hosted in the cloud.

3. Availability There are also concerns about a cloud

provider shutting down for financial or legalreasons, which has happened in a number ofcases. Lost control comes with handing overyour data and information.

If your cloud host disappears, where doesyour information go?


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Thank You

Documents

My Ppt Cloud Computing