4. Private cloud
Private cloud: The cloud infrastructure is provisioned
for exclusive use by a single organization comprising
multiple consumers (e.g., business units). It may be
owned, managed, and operated by the organization, a
third party, or some combination of them, and it may
exist on or off premises.
4
6. Public cloud
Public cloud: The cloud infrastructure is provisioned
for open use by the general public. It may be owned,
managed, and operated by a business, academic, or
government organization, or some combination of
them. It exists on the premises of the cloud provider.
6
8. Community cloud
Community cloud: The cloud infrastructure is
provisioned for exclusive use by a specific
community of consumers from organizations that
have shared concerns (e.g., mission, security
requirements, policy, and compliance
considerations). It may be owned, managed, and
operated by one or more of the organizations in the
community, a third party, or some combination of
them, and it may exist on or off premises.
8
10. Hybrid cloud
Hybrid cloud: The cloud infrastructure is a
composition of two or more distinct cloud
infrastructures (private, community, or public) that
remain unique entities, but are bound together by
standardized or proprietary technology that enables
data and application portability (e.g., cloud bursting
for load balancing between clouds).
10
16. How to select the best Model for your
business?
16
The cloud deployment selection is based on multiple evaluation criteria including
technology, businesscriteria, legal issues,etc…
The best model selection may be for:
Workload
Patterns
Security
concerns Regulations Availability
Hosted Data
classification
Type of
requeste
d
services
Available
Budget
Time to
operate Skills
21. Cloud Deployment Summary
21
Deployment model Description Best suited for offers challenges
Public cloud • Provisioned of general public use
• Externally hosted by a service provider
• Variable workloads
• Test & Dev
• The Lowest TCO
• Rabid elasticity
& flexibility
• Faster deployments
• Data security &
privacy
• Service
availability (e.g.
cut in
connectivity)
Private cloud • Use for a single organization
• Can be internally or externally deployed
• Sensitive data
• Legal compliance
• Security & control
• Higher customizability
• performance
• High Cost
of
ownership
• Required skill set
Community cloud • Shared by several organizations
• typically externally hosted
• Can be hosted internally by one of
the organizations or could be
distributed.
• Collaboration
between universities
• Multiple business
enterprises apply
Shared services model
(e.g. group of hospitals
& clinics)
• Lower TCO
than private
cloud
• elasticity
• Complex
IT
governanc
e
• Required skill set
Hybrid cloud • Composition of 2 or more clouds that
remains unique entities but are bound
together.
• Make use of the scalability and cost-
effectiveness of public cloud offers without
exposing mission-critical applications and
data to third-party vulnerabilities
• Cloud bursting
• On-demand access
• Sensitive data
• Storage as a service for
non- sensitive data
• Lower TCO
• High elasticity
• Security &control
• Performance
• customizability
• Portability
• interoperability
• Integration
• migration
22. Research hot topics
22
• Cloud Data sovereignty - Legal research
◦ What are the laws governing the data access? How to
comply with conflicting laws & acts?
◦ The laws of the country in which the data originated?
◦ The laws of the country in which the cloud customer is based?
◦ The laws of the country, or countries, in which the cloud provider houses its data
centers?
◦ The laws of the country in which the cloud provider is based?
◦ Or all of the above?
23. Research hot topics (Cont’d)
• Cloud Computing portability & interoperability- Technical
research
23
24. Research hot topics (Cont’d)
24
• Cloud Computing portability & interoperability- Technical
research
Data portability
Applicatio
n
portability
Platform
portabilit
y
Application
interoperabilit
y
Platform
interoperabilit
y
Management
interoperabilit
y
25. Other topics
25
Distributed file
systems and data
management
(Technical)
Legacy System
Migration
(Technical)
Cloud SLAs
(legal &
contractual)
Community cloud
governance
(operation &
managerial)
Performance/scale/pri
ce estimation
(marketing,
management)
Mobile Cloud
Computing
(Technical)
Deployment
Model Selection
(Strategic Management)
Cost & Risk
Analysis
(Management)
26. References
26
•NIST SP 800-145, “ANISTdefinition of cloudcomputing”,http://csrc.nist.gov/publications/drafts/800-
145/Draft-SP- 800-145_cloud-definition.pdf
•NIST Cloud Computing Reference Architecture,
http://www.cloudcredential.org/images/pdf_files/nist%20reference%20architec
ture.pdf
•NIST SP 800-146, “NISTCloudComputingSynopsisand
Recommendations”, http://csrc.nist.gov/publications/drafts/800-
146/Draft-NIST-SP800-146.pdf
•Cloud Computing Portability and Interoperability,
http://www.opengroup.org/cloud/cloud_iop/cloud_port.htm
•Towards Multi-criteria Cloud Service Selection, IEEE,
http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=5976164&url=http%3A%2F%2Fieeexplore.ieee.o
rg%2Fxpls% 2Fabs_all.jsp%3Farnumber%3D5976164
•Cloud Computing – A Classification, Business Models, and Research
Directions, springer,
http://download.springer.com/static/pdf/458/art%253A10.1007%252Fs12599-
009-0071-
2.pdf?auth66=1388152113_369819fc6a3a7900814b03a13546acf7&ext=.pdf
27. References (Cont’d)
27
•Deployment models: Towards eliminating security concerns from cloud computing, IEEE
http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=5547137&url=http%3A%2F%2Fieeexplore.ieee.o
rg%2Fxpls% 2Fabs_all.jsp%3Farnumber%3D5547137
•Cloud computing: Issues and challenges, IEEE
http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=5474674&url=http%3A%2F%2Fieeexplore.ieee.o
rg%2Fxpls% 2Fabs_all.jsp%3Farnumber%3D5474674
•Virtual Infrastructure Management in Private and Hybrid Clouds, IEEE
http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=5233608&url=http%3A%2F%2Fieeexplore.ieee.o
rg%2Fxpls% 2Fabs_all.jsp%3Farnumber%3D5233608
•Building a Flexible Service Architecture for User Controlled Hybrid
Clouds, IEEE
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6329175
