Cloud Computing1

Cloud Computing

Table of Contents

What is Cloud Computing Cloud Services Cloud Architecture Comparative Study Expenditure Features Traditional in-house business Cloud Penetration

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Cloud Computing

What is Cloud Computing

Cloud Computing is a buzzword…………

The concept, quite simply, is that vast computing resources will reside in a remote location (rather than in your computer room) and we’ll connect to them and use them as needed.

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Cloud Computing

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Software as a Service [SaaS]:

Instead of obtaining desktop and server licenses for software products it uses, an enterprise can obtain the same functions through a hosted service from a provider through a network connection. This common cloud-computing model is known as So ftwa re a s a Se rvic e (Sa a S), the p ro v id e r is kno wn a s the Sa a S Pro vid e r. These applications could be in ERP, VCC to name a few.

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Cloud Computing

Advantages of SaaS

Saves the complexity of software installation. No need for maintenance, upgrades, and

patches (for example, for security fixes) for the IT team within the enterprise.

SaaS provider can provide this service to multiple customers and enterprises, resulting in a multitenant model.

Monitoring application-delivery performance is the responsibility of the SaaS provider.

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Platform as a Service [PaaS]

Pla tfo rm a s a Se rvic e (Pa a S) p ro v id e s a s o ftwa re p la tfo rm o n which us e rs c a n build the ir o wn a p p lic a tio ns a nd ho s t the m o n the Pa a S p ro vid e r’ s infra s truc ture . The s o ftwa re p la tfo rm is us e d a s a d e ve lo p m e nt fra m e wo rk to build , d e bug , a nd d e p lo y a p p lic a tio ns . It o fte n p ro v id e s m idd le wa re -s ty le s e rv ic e s s uch a s d a ta ba s e a nd c o m p o ne nt s e rv ic e s fo r us e by a p p lic a tio ns .

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Advantages of PaaS

PaaS is a true cloud model in that applications do not need to worry about the scalability of the underlying platform (hardware and software).

When enterprises write their application to run over the PaaS provider’s software platform, the elasticity and scalability is guaranteed transparently by the PaaS platform.

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Cloud Computing

Infrastructure as a Service [IaaS]

Amazon is arguably the first major proponent of Infra s truc ture a s a Se rvic e (Ia a S) thro ug h its Ela s tic Co m p uting Clo ud (EC2 ) s e rv ic e . An Ia a S p ro v id e r o ffe rs y o u “ra w” c o m p uting , s to ra g e , a nd ne two rk infra s truc ture s o tha t y o u c a n lo a d y o ur o wn s o ftwa re , inc lud ing o p e ra ting s y s te m s a nd a p p lic a tio ns , o n to this infra s truc ture .

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Cloud Computing

Advantages of IaaS

Offers you the greatest degree of control of the three models.

Scaling and elasticity are your—not the provider’s—responsibility.

It is a mini do-it-yourself data center that you have to configure to get the job done.

Amazon uses virtualization as a critical underpinning of its EC2 service, so you actually get a VM when you ask for a specific machine configuration

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Cloud Computing

Cloud Architectures

1. Public Cloud

2. Community Cloud

3. Private Cloud

4. Hybrid Cloud

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Cloud Computing

Cloud Architectures: Public Cloud

We have focused on cloud service providers whose data centers are external to the users of the service (businesses or individuals). These clouds are known as public clouds—both the infrastructure and control of these clouds is with the service provider.

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Cloud Architectures: Private Cloud

A variation on this scenario is the p riva te c lo ud . He re , the c lo ud p ro vid e r is re s p o ns ible o nly fo r the infra s truc ture a nd no t fo r the c o ntro l. This s e tup is e q uiva le nt to a s e c tio n o f a s ha re d d a ta c e nte r be ing p a rtitio ne d fo r us e by a s p e c ific c us to m e r. The private cloud can offer SaaS, PaaS, or IaaS services, though IaaS might appear to be a more natural fit.

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Cloud Architectures: Hybrid Cloud

A hybrid cloud involves data centers storing secure and important data on the enterprise premises and less important data to be stores at a remote location in the cloud. So t is a mixture of public and private cloud that yields the most benefit.

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Comparative StudyTraditional In-house system

implementationCloud services in the form of SaaS, Paas

and IaaS

1. High CapEx 1. OpEx oriented

2. Time required to implement the system 2. Comparatively low startup cost

3. Maintenance Cost 3. Pay for what you use

4. Equipment depreciation 4. Low maintenance cost

5. Dedicated staff for 24 * 7 support 5. Scalable and secure environment

6. Under-utilized resources 6. Business companies can focus on business development, not on IT.

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Cloud Computing

ExpenditureBy 2011 16 billion or 4% of total IT s:pending will be on cloud.

By 2012, it is likely to go upto 9%.

Reasons: Cost controls, Better Peak time Economy,Readily Scalable, Concentrate on the business and less on IT infrastructure.

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Features Agility Reliability Scalability Performance Security Maintenance

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Feature 1: Scalability

Clo ud c o m p uting g ive s y o u the a bility to e x p a nd a nd re duc e re s o urc e s a c c o rd ing to y o ur s p e c ific s e rv ic e re q uire m e nt.

Fo r e x a m p le , y o u m a y ne e d a la rg e num be r o f s e rve r re s o urc e s fo r the dura tio n o f a s p e c ific ta s k. Yo u c a n the n re le a s e the s e s e rve r re s o urc e s a fte r y o u c o m p le te y o ur ta s k.

twitter fo r ins ta nc e

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Cloud Computing

Feature2: Pay-per-use

Yo u p a y fo r c lo ud s e rv ic e s o nly whe n y o u us e the m .

The s ho rt te rm (fo r e x a m p le , fo r CPU tim e ) o r

fo r a lo ng e r dura tio n (fo r e x a m p le , fo r c lo ud -ba s e d s to ra g e o r va ult s e rvic e s ).

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Feature 3: On-demand service

Be c a us e y o u invo ke c lo ud s e rvic e s o nly whe n y o u ne e d the m , the y a re no t p e rm a ne nt p a rts o f y o ur IT infra s truc ture — a s ig nific a nt a dva nta g e fo r c lo ud us e a s o p p o s e d to inte rna l IT s e rvic e s . With c lo ud s e rv ic e s the re is no ne e d to ha ve d e d ic a te d re s o urc e s wa iting to be us e d , a s is the c a s e with inte rna l s e rv ic e s .

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Feature 3: Resiliency

The re s ilie nc y o f a c lo ud s e rv ic e o ffe ring c a n c o m p le te ly is o la te the fa ilure o f s e rve r a nd s to ra g e re s o urc e s fro m c lo ud us e rs . Wo rk is m ig ra te d to a d iffe re nt p hys ic a l re s o urc e in the c lo ud with o r witho ut us e r a wa re ne s s a nd inte rve ntio n.

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Cloud Computing

Traditional in-house business

software

Employees Your business Servers

CRMPOSERPHRMEmailVCC

Hardware dependencyOperating systemsDatabasesSecurity patchesUnpredictable costs

Softwares

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Cloud Computing

Cloud Computing Penetration

software

Employees Your business Servers

CRMPOSERPHRMEmailVCC

Hardware dependencyOperating systemsDatabasesSecurity patchesUnpredictable costs

Softwares

Cloud Computing

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Cloud Computing

Traditional in-house business

Employers Your business

CRMPOSERPHRMEmailVCC

Softwares

Cloud Computing

ERP

Hosted PBX

Email

More

More

10 employees = 10 subscriptions

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Cloud Computing

Traditional in-house business

Employers Your business

CRMPOSERPHRMEmailVCC

Softwares

Cloud Computing

datacenters

10 employees = 10 subscriptions

Hardware dependencyOperating systemsDatabasesSecurity patchesUnpredictable costs

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Cloud Computing

Traditional in-house business

Cloud Computing

datacenters

Hardware dependencyOperating systemsDatabasesSecurity patchesUnpredictable costs

Economies of Scale

30% to 50% less in expenditure

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Cloud Computing

Areas of cloud computing Banking Hospitals Educational institutions

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Cloud Computing