2. Outline
• Cloud Terms
• Comparisons
• Many Flavors of Cloud Computing
• Key Characteristics
• Architecture Type
• Who’s using Clouds today?
• Example: Eli Lilly
• Legal Issues
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3. What is “Cloud”?
There is no clear definition of the term
“Cloud” or “Cloud Computing”
– No Official Definition
– Term takes on the definition of the user
– Overuse the term “cloud” by eager marketer
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4. What is “Cloud”?
There are two popular uses of the term
“cloud” in today’s I.T. conversation
– Cloud Services - consumer and business
products, services and solutions that are
delivered and consumed in real-time over the
internet
– Cloud Computing - an emerging IT
development, deployment, and delivery model
that enables real-time delivery of a broad
range of IT products, services and solutions
over the internet
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6. Comparisons
• Grid Computing – a form of distributed
computing, acting in concert to perform very
large tasks
• Utility Computing – a metered service similar
to a traditional public utility such as electricity
• Autonomic Computing – capable of self-
management
• Cloud Computing – deployments as of 2009
depend on grids, have autonomic characteristics
and bill like utilities
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7. Cloud Formation
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Cloud Computing is
an emerging IT
development,
deployment and
delivery model,
enabling real-time
delivery of products,
services and solutions
(i.e., enabling cloud
services) over the
Internet (IDC)
Cloud computing is
Internet based
development and use of
computer technology. It
is a style of computing in
which typically real-time
scalable resources are
provided as a service
over the internet
(Wikipedia)
Cloud:
the new home
and business
network
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8. Many Flavors of Cloud
Computing
• SaaS – Software as a Service
– Network-hosted application
• PaaS– Platform as a Service
– Network-hosted software development
platform
• IaaS – Infrastructure as a Service
– Provider hosts customer VMs or provides
network storage
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9. Many Flavors of Cloud
Computing (cont’d)
• DaaS – Data as a Service
– Customer queries against provider’s database
• IPMaaS – Identity and Policy
Management as a Service
– Provider manages identity and/or access
control policy for customer
• NaaS – Network as a Service
– Provider offers virtualized networks (e.g.
VPNs)
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12. Cloud “Applications”
• SaaS resides here
• Most common Cloud / Many providers of
different services
• Examples: SalesForce, Gmail, Yahoo! Mail,
Quicken Online
• Advantages: Free, Easy, Consumer
Adoption
• Disadvantages: Limited functionality, no
control or access to underlying technology
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13. Cloud “Platforms”
• “Containers”, “Closed” environments
• Examples: Google App Engine, Heroku,
Mosso, Engine Yard, Joyent or Force.com
(SalesForce Dev Platform)
• Advantages: Good for developers, more
control than “Application” Clouds, tightly
configured
• Disadvantages: Restricted to what is
available, other dependencies
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14. Cloud “Infrastructure”
• Provide “Compute” and “Storage” clouds
• Virtualization layers (hardware/software)
• Examples: Amazon EC2, GoGrid, Amazon
S3, Nirvanix, Linode
• Advantages: Full control of environments
and infrastructure
• Disadvantages: premium price point, limited
competition
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18. Single-Tenant vs. Multi-Tenant
Architecture
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Single tenancy gives each customer a
dedicated software stack – and each layer in
each stack still requires configuration,
monitoring, upgrades, security updates,
patches, tuning and disaster recovery.
On a multi-tenant platform, all applications
run in a single logical environment: faster,
more secure, more available, automatically
upgraded and maintained. Any improvement
appears to all customers at once.
Shared infrastructure
Other apps
Server
OS
Database
App Server
Storage
Network
App 1
Server
OS
Database
App Server
Storage
Network
App 2
Server
OS
Database
App Server
Storage
Network
App 3
19. Who’s using Clouds today?
• Startups & Small businesses
– Can use clouds for everything
• Mid-Size Enterprises
– Can use clouds for many things
• Large Enterprises
– More likely to have hybrid models where they
keep some things in house
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