1. Cloud Computing
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Cloud Computing

2. 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

3. 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

4. 4 Cloud Computing

5. 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 ftware
as a Se rvice (SaaS), the pro vide r is kno wn as
the SaaS Pro vide r. These applications could
be in ERP, VCC to name a few.
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Cloud Computing

6. 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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Cloud Computing

7. Platform as a Service [PaaS]
 Platfo rm as a Se rvice (PaaS) pro vide s a
so ftware platfo rm o n which use rs can build
the ir o wn applicatio ns and ho st the m o n the
PaaS pro vide r’s infrastructure . The so ftware
platfo rm is use d as a de ve lo pm e nt fram e wo rk
to build, de bug , and de plo y applicatio ns. It
o fte n pro vide s m iddle ware -style se rvice s such
as database and co m po ne nt se rvice s fo r use
by applicatio ns.
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Cloud Computing

8. 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

9. Infrastructure as a Service [IaaS]
 Amazon is arguably the first major proponent
of Infrastructure as a Se rvice (IaaS) thro ug h
its Elastic Co m puting Clo ud (EC2) se rvice . An
IaaS pro vide r o ffe rs yo u “raw” co m puting ,
sto rag e , and ne two rk infrastructure so that yo u
can lo ad yo ur o wn so ftware , including
o pe rating syste m s and applicatio ns, o n to this
infrastructure .
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Cloud Computing

10. 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

11. Cloud Architectures
1. Public Cloud
2. Community Cloud
3. Private Cloud
4. Hybrid Cloud
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Cloud Computing

12. 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 Computing

13. Cloud Architectures: Private Cloud
 A variation on this scenario is the private
clo ud. He re , the clo ud pro vide r is re spo nsible
o nly fo r the infrastructure and no t fo r the
co ntro l. This se tup is e q uivale nt to a se ctio n o f
a share d data ce nte r be ing partitio ne d fo r use
by a spe cific custo 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 Computing

14. 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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Cloud Computing

15. 15
Cloud Computing

16. Comparative Study
Traditional In-house system
implementation
Cloud services in the formof 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

17. Expenditure
By 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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Cloud Computing

18. Features

Agility

Reliability

Scalability

Performance

Security

Maintenance
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Cloud Computing

19. Feature 1: Scalability
 Clo ud co m puting g ive s yo u the ability to
e xpand and re duce re so urce s acco rding to
yo ur spe cific se rvice re q uire m e nt.
 Fo r e xam ple , yo u m ay ne e d a larg e num be r
o f se rve r re so urce s fo r the duratio n o f a
spe cific task. Yo u can the n re le ase the se
se rve r re so urce s afte r yo u co m ple te yo ur task.
 twitterfo r instance
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Cloud Computing

20. Feature2: Pay-per-use
 Yo u pay fo r clo ud se rvice s o nly whe n yo u use
the m .
 The sho rt te rm (fo r e xam ple , fo r CPUtim e )
o r
 fo r a lo ng e r duratio n (fo r e xam ple , fo r clo ud-
base d sto rag e o r vault se rvice s).
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Cloud Computing

21. Feature 3: On-demand service
 Be cause yo u invo ke clo ud se rvice s o nly whe n
yo u ne e d the m , the y are no t pe rm ane nt parts
o f yo ur IT infrastructure — a sig nificant
advantag e fo r clo ud use as o ppo se d to
inte rnal IT se rvice s. With clo ud se rvice s the re
is no ne e d to have de dicate d re so urce s
waiting to be use d, as is the case with inte rnal
se rvice s.
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Cloud Computing

22. Feature 3: Resiliency
 The re silie ncy o f a clo ud se rvice o ffe ring can
co m ple te ly iso late the failure o f se rve r and
sto rag e re so urce s fro m clo ud use rs. Wo rk is
m ig rate d to a diffe re nt physicalre so urce in the
clo ud with o r witho ut use r aware ne ss and
inte rve ntio n.
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Cloud Computing

23. Traditional in-house business
software
Employees Your business Servers
CRM
POS
ERP
HRM
Email
VCC
Hardware dependency
Operating systems
Databases
Security patches
Unpredictable costs
Softwares
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Cloud Computing

24. Cloud Computing Penetration
software
Employees Your business Servers
CRM
POS
ERP
HRM
Email
VCC
Hardware dependency
Operating systems
Databases
Security patches
Unpredictable costs
Softwares
Cloud Computing
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Cloud Computing

25. Traditional in-house business
Employers Your business
CRM
POS
ERP
HRM
Email
VCC
Softwares
Cloud Computing
ERP
Hosted
PBX
Email
More
More
10 employees =
10 subscriptions
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Cloud Computing

26. Traditional in-house business
Employers Your business
CRM
POS
ERP
HRM
Email
VCC
Softwares
Cloud Computing
datacenters
10 employees =
10 subscriptions
Hardware dependency
Operating systems
Databases
Security patches
Unpredictable costs
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Cloud Computing

27. Traditional in-house business
Cloud Computing
datacenters
Hardware dependency
Operating systems
Databases
Security patches
Unpredictable costs
Economies of
Scale
30% to 50% less
in expenditure
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Cloud Computing

28. Areas of cloud computing

Banking

Hospitals

Educational institutions
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Cloud Computing