Paper Presentation on Cloud computing

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Nov 3, 2013 (3 years and 7 months ago)

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Paper Presentation on Cloud computing








Name of the College


: P.K.N.Arts and Science College

Paper Submitted By


: E.Arul Benjamin Chandru










CONTENTS



Introduction



Comparisons



Definition



Characteristics of Cloud Computing



Surveys on Cloud

Computing



Applications On Demand

(Softwar
e as a
Service)



Companies offering SaaS



Platform as a Service



Companies offering Paas



Infrastructure as a Service



Companies offering Iaas



Advantages of Cloud Hosting



Disadvantages of Cloud Hosting





Cloud computing

Introduction

Cloud computing is Inter
net
-

("cloud
-
") based development and
use of computer technology ("computing").

In concept, it is a paradigm shift whereby details are abstracted
from the users who no longer need knowledge of, expertise in, or
control over the technology infrastructure "
in the cloud" that
supports them.

Cloud computing describes a new supplement, consumption and
delivery model for IT services based on Internet, and it typically
involves the provision of dynamically scalable and often
virtualized resources as a service ov
er the Internet.


Comparisons

Cloud computing can be confused with:

1.

Grid computing


"a form of distributed computing and
parallel computing, whereby a 'super and virtual

computer' is
composed of a cluster of networked, loosely coupled
computers acting in concert to perform very large tasks"

2.

Utility computing


the "packaging of computing resources,
such as computation and storage, as a metered service similar
to a traditi
onal public utility, such as electricity";

3.

Autonomic computing


"computer systems capable of self
-
management".

Definition

Cloud computing is a general term for anything that involves
delivering hosted services over the Internet.

These services are broadl
y divided into three categories:
Infrastructure
-
as
-
a
-
Service (IaaS), Platform
-
as
-
a
-
Service (PaaS)
and Software
-
as
-
a
-
Service (SaaS).

The name cloud computing was inspired by the cloud symbol that's
often used to represent the Internet in flow charts and di
agrams.

Characteristics of Cloud Computing

A cloud service has three distinct characteristics that differentiate it
from traditional hosting.

It is sold on demand, typically by the minute or the hour;

it is elastic
--

a user can have as much or as little

of a service as
they want at any given time; and the service is fully managed by
the provider (the consumer needs nothing but a personal computer
and Internet access).

Significant innovations in virtualization and distributed computing,
as well as improv
ed access to high
-
speed Internet and a weak
economy, have accelerated interest in cloud computing.


Surveys on Cloud Computing

In June 2009, a study conducted by VersionOne found that 41% of
senior IT professionals actually don't know what cloud computing
is and two
-
thirds of senior finance professionals are confused by
the concept, highlighting the young nature of the technology.

In Sept 2009, an Aberdeen Group study found that disciplined
companies achieved on average an 18% reduction in their IT
budget
from cloud computing and a 16% reduction in data center
power costs.

Applications On Demand

(Software as a Service)

So far the applications segment of cloud computing is the only
segment that has proven successful as a business model.


By running business applications over the internet from
centra
lized servers rather than from on
-
site servers, companies can
cut some serious costs.

Furthermore, while avoiding maintenance costs, licensing costs
and the costs of the hardware required to run servers on
-
site,
companies are able to run applications much

more efficiently from
a computing standpoint.

Companies offering SaaS

The companies below are already established in the On
-
Demand
software or SaaS business. These companies charge their
customers a subscription fee and in return host software on central

servers that are accessed by the end user via the internet.



Salesforce.com



Google



NetSuite



Taleo



Concur Technologies


Platform as a Service


The platform segment of cloud computing refers to products that
are used to deploy applications.

Platfor
ms serve as an interface for users to access applications
provided by partners or in some cases the customers.

Some examples included Salesforce.com's platform force.com,
which allows subscribers to access their applications over the
internet.

NetSuite,
Amazon, Google, and Microsoft have also developed
platforms that allow users to access applications from centralized
servers.

Companies offering Paas

The following companies are some that have developed platforms
that allow end users to access applications

from centralized servers
using the internet. Next to each company is the name of their
platform.

o

Google
-

Apps Engine

o

Amazon.com
-

EC2

o

Microsoft
-

Windows Live

o

Terremark Worldwide
-

The Enterprise Cloud

o

Salesforce.com
-

Force.com

o

NetSuite
-

Su
iteflex

o

Mosso
-

Mosso, a division of Rackspace

o

Metrisoft
-

Metrisoft SaaS Platform

Infrastructure as a Service

Infrastructure vendors provide the physical storage space and
processing capabilities that allow for the all the services described
above.

Th
e products in this segment are slightly more varied than those in
the other areas of cloud computing but include ones such as
managed hosting, and development environments (such as Google
gears) that allow users to build applications.

Cloud storage, such
as Amazon's S3, is also considered to be part
of the infrastructure segment.

Companies offering Iaas

Below are companies that provide infrastructure services:

o

Google
-

Managed hosting, development environment

o

International Business Machines (IBM)
-

Manag
ed
hosting

o

SAVVIS
-

Managed hosting

o

Terremark Worldwide
-

Managed hosting

o

Amazon.com
-

Cloud storage

Advantages of Cloud Hosting

Hosting our information on an outsourced system (that is
maintained by a third
-
party) can really free up space and cut cos
ts.

With cloud hosting, we can


• Access our data at all times


not just while in the office

• A physical storage center is no longer needed

• Most have a pay structure that only calls for payment only when
used

• Relieves burden on IT Professionals and
frees up their time in the
office

• Easily scalable so companies can add or subtract storage based on
their own needs

Disadvantages of Cloud Hosting

If you are going to move all of your information to data centers
situated outside your company, then securi
ty should be of utmost
importance.


• Lost control comes with handing over our data and information

• Depending on third
-
party to ensure the security and
confidentiality of data and information

• If our cloud host disappears, where does our information go?














Article By,

E.Arul Benjamin Chandru.