4. 3
Enterprise
DataCenter
THERE IS A SPECTRUM OF DEPLOYMENT OPTIONS FOR
CLOUD COMPUTING
1) Private
Cloud
2) Managed
Private Cloud
3) Hosted
Private Cloud
4) Community
Cloud Services
5) Public
Cloud Services
Enterprise
DataCenter
3rdparty
operated
Enterprise
3rd party
hosted &
operated
Private
Cloud
Managed
PrivateCloud
Hosted
PrivateCloud
EnterpriseA
EnterpriseB
Enterprise C
User1
User2
User4
User3
Private Public
Hybrid
Key features
•Scalability
•Automatic/rapid provisioning
•Chargeback ability
•Widespread virtualization
•Security
Key features
•Scalability
•Automatic/rapid provisioning
•Standardized offerings
•Consumption-based pricing.
•Multi-tenancy
Key features
• Internal & external
services integrated
• Functions allocated to
based on requirements,
business needs,
architecture etc
S
hared
CloudServices
Public
CloudServices
5. Customers are choosing avariety of cloud models tomeet their unique needsand priorities.
Private Cloud
On or off premises cloud
infrastructure operated solely for
an organization and managed by
the organization or a third party
Public Cloud
Available to the general public or
a large industry group and owned
by an organization selling cloud
services
Hybrid Cloud
Traditional IT and clouds (public
and private) that remain separate
but are bound together by
technology that enables data and
application portability
Traditional IT
Appliances, pre-integrated
systems and standard hardware,
software, and networking
CLOUD DELIVERY
MODELS
6. FFlelexxibibiliiltiyty
DIFFERENT DELIVERY
MODELS
Off-Premise
Traditiona
l IT
Dedicated Hybrid
On-Premise
Description
Cost Model
Service
P rivate/P ublic
Dedicated systems in
customers data centre.
Bespoke and highly
customised to
application needs.
$$$$
Customer owned.
Customer operated.
High Capex/ High
Opex. Long term
commitment.
High SLAs.
99.999
availability.
Custom security.
Behind customer
firewall.
Always
private
Dedicated cloud in
customers data centre.
Highly automated,
pattern based, tuned for
workloads.
$$$
Customer owned.
Customer
operated.
High Capex/Medium
Opex. Mid term
commitment.
High SLAs.
99.999
availability.
Standardised security.
Behind customer
firewall.
Always
Private
Combined on-premise and
off- premise cloud systems.
Includes off-premise private
Cloud.
Highly standardised build,
some parts run by service
provider.
$$
Partial customer ownership.
Mostly service provider
operated. Med
Capex/Medium Opex.
Short term commitment.
High SLAs.
99+
availability.
Standardised security.
Requires good network
and security.
Can be private or
public
Public cloud infrastructure
run off premise by service
provider. Commodity
resources defined by the
service provider. Catalog
based services.
$
Provider owned.
Provider
operated. Full
Opex model.
No/short term
commitment. PAYG.
Medium SLAs.
98+
availability.
Relies upon provider
security and trust.
Likely to be public, but can
have dedicated private
cloud at off-premise service
provider.
7. PRIVATECLOUD
• centralizing access to IT resources by different parts, locations, or departments of the
organization.
• When aprivate cloud existsasacontrolled environment, the problemsdescribedin the
RisksandChallengessectiondo not tend toapply.
• Aprivate cloud isowned by asingle organization.
• Private clouds enable
cloud computing technology as a means
an organization to use
of
8. •
CLOUD INFRASTRUCTURE
BUILT INHOUSE
• Retains control of resources
• More security & privacy
• Canconform to regulatory
requirement
• Needscapital investment
• Needsexpertise to buildand
maintain
P
P
r
r
i
v
i
v
a
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t
t
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C
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9.
10. PUBLICCLOUD
• A public cloud is a publicly accessible
cloud environment owned by a third-
party cloud provide
• TheITresources on public clouds are usually
provisioned via cloud delivery models.
• Thecloud provider is responsible for the
creation and on-going maintenance of the
public cloud and its ITresources.
11. •
AVAILABLE TO
EVERYONE.
• Anyone can go and signup
for theservice.
• Economies of Scaledueto
Size.
• Somepublic cloud concerns
– Ownership
– Control
– Regulatory compliance
– Data/Application security
– Liability for SLAbreaches
P
P
u
u
b
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l
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l
c
i
c
C
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o
l
o
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d
d
I
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t
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r
n
e
t
12. • Many of the scenarios andarchitectures
explored via Public cloud.
13. • A hybrid cloud is a cloud
environment comprised of two
or more different cloud
deployment models.
• Best of BothWorld
• Workload is deployed mostly on
private cloud
• Resources can be used from
public cloud when there is a
surge in peak load (CloudBurst)
P
P
r
r
i
v
i
v
a
a
t
t
e
e
C
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o
l
o
u
u
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P
P
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b
b
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c
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c
C
C
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I
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l
o
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t
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t
HYBRID
CLOUDS
14. HYBRID DELIVERS BENEFITS BEYOND ONLY PUBLIC OR
PRIVATE CLOUD MODELS
Reducecosts and maximise existing ITinvestments.
– Data centre and infrastructure reused alongside flexible publiccloud.
Businessagility, scale quickly to respond tobusinessevents.
– Move quickly increasing workloads to off-premiseClouds.
Maintain control through applicationlifecycle.
– Single point of control of ITinfrastructure resources,consumption and usage
Maintain visibility of importantworkloads.
– Workloads placed basedon servicerequirements
Shared
Off-Premise
Dedicated Hybrid
On-Premise
Traditiona
l IT
Enterprise class Flexibility & Resilience
Regulated Workloads Regulated Workloads
P roduction
User Data
Low-cost
commodity
Test/Dev
Anonymised Data
Performance
without
commitment
Pre-
Production/Test
Anonymised Data
Production
User Data
15. Data centre prioritised for
high- availability production
workloads with service mgmt
Low priority
workloads moved
externally
Lower investment in
fixed data centre
assets ITIL
managed
Burst at peak workload
to low cost commodity
provider
Dev
Test - SIT
De
v
No
commitment
Pay as you go
- commodity
Long term flexibility with
external Dedicated
Private
Exploit unused
production
capacity
Development SCM Build SIT UAT Prod
Application Lifecycle
Time
ADOPTING HYBRID LOWERS COSTS WHILE
MAINTAINING SERVICELEVELS
16. Deployment Models - Benefits
C
ustomer
Scenario
ServiceModel Deployment
Model
Benefits
Payroll
Processing
IaaS(VMs),
cloudstorage
PublicCloud Processingtime reduced
Hardwarerequirementsreduced
Elasticityenabledfor future expansion
Astronomic
Data
Processing
IaaS(VMs),
cloudstorage
PublicCloud Hardwareexpensegreatly reduced
processingpowerandstorage)
Energycostsgreatly reduced
Administrationsimplified
Central
Government
IaaS,PaaS Private
Cloud
ITexpertiseconsolidated
Hardwarerequirementsreduced
Local
Government
IaaS,PaaS HybridCloud ITexpertiseconsolidated
Hardwarerequirementsreduced
