Basics of Cloud provisioning Cloud Basics – Cloud for Beginners/Starters - Fundamentals of Cloud Computing by Enamul Haque - Cloud computing has evolved through a number of phases which include grid and utility computing, application service provision (ASP), and Software as a Service (SaaS). Understanding Cloud Computing.

1. CLOUD BASICS
Enamul Haque

2. EVOLVING TECHNOLOGIES Cloud computing has evolved
through a number of phases which
include grid and utility computing,
application service provision (ASP),
and Software as a Service (SaaS).
Then in 2006, Amazon launched its
Elastic Compute cloud (EC2) as a
commercial web service that allows
small companies and individuals to rent
computers on which to run their own
computer applications.
"Amazon EC2/S3 was the first widely
accessible cloud computing
infrastructure service," said Jeremy
Allaire, CEO of Brightcove, which
provides its SaaS online video platform
to UK TV stations and newspapers.
Another big milestone came in 2009, as
Web 2.0 hit its stride, and Google and
others started to offer browser-based
enterprise applications, though services

3. UNDERSTANDING THE ESSENTIALS
Cloud is a Strategy
Cloud is not a technology
Cloud is a metaphor for the internet
A basic definition of cloud computing is the use of the
Internet for the tasks you perform on your computer
From a users point of view, a good cloud computing
definition is using Web applications and/or server services
that you pay to access rather than software or hardware
that you buy and install.
Cloud Computing is a general term used to describe a new class of network based
computing that takes place over the Internet,
• basically a step on from Utility Computing
• a collection/group of integrated and networked hardware, software and Internet
infrastructure (called a platform).
• Using the Internet for communication and transport provides hardware, software and
networking services to clients

4. CLOUD ATTRIBUTES

5. CLOUD CHARACTERISTICS
On-demand self-service. A consumer can unilaterally provision computing
capabilities, such as server time and network storage, as needed automatically
without requiring human interaction with service providers.
Broad network access. Capabilities are available over the network and accessed
through standard mechanisms that promote use by heterogeneous thin or
thick client platforms (e.g., mobile phones, tablets, laptops, and workstations).
Resource pooling. The provider’s computing resources are pooled to serve
multiple consumers using a multi-tenant model, with different physical and
virtual resources dynamically assigned and reassigned according to consumer
demand.
Rapid elasticity. Capabilities can be elastically provisioned and released, in
some cases automatically, to scale rapidly outward and inward commensurate
with demand.
Measured service. Cloud systems automatically control and optimize resource
use by leveraging a metering capability at some level of abstraction
appropriate to the type of service (e.g., storage, processing, bandwidth, and
active user accounts).

6. CLOUD SERVICE MODELS
Software as a Service (SaaS). The
capability provided to the
consumer is to use the provider’s
applications running on a cloud
infrastructure. The applications
are accessible from various client
devices through either a thin
client interface, such as a web
browser (e.g., web- based email),
or a program interface.
Platform as a Service (PaaS).The
capability provided to the
consumer is to deploy onto the
cloud infrastructure consumer-
created or acquired applications
created using programming
languages, libraries, services, and
tools supported by the provider.
Infrastructure as a Service (IaaS).
The capability provided to the
consumer is to provision
processing, storage, networks,
and other fundamental computing
resources where the consumer is
able to deploy and run arbitrary
software, which can include
operating systems and
Software as a Service
(SaaS)
Platform as a Service
(PaaS)
Infrastructure as a
Service (IaaS)
Google
App
Engine
SalesForce CRM
LotusLive
Adopted from: Effectively and Securely Using the Cloud Computing Paradigm by peter Mell, Tim Grance

7. CLOUD ARCHITECTURE
• Cloud computing is a model for
enabling convenient, on-demand
network access to a shared pool
of configurable computing
resources (e.g., networks,
servers, storage, applications,
and services) that can be rapidly
provisioned and released with
minimal management effort or
service provider interaction.
• Cloud computing customers do
not own the physical
infrastructure.
• Cloud computing users avoid
capital expenditure (CapEx) on
hardware, software, and services
when they pay a provider only for
what they use.
• Low shared infrastructure and
Front-end
platforms
called clients or
cloud clients
These client
platforms
interact with
the cloud data
storage via an
application
(middleware),
via a web
browser, or
through a
virtual session
Cloud storage/
Infrastructure

8. CLOUD COMPUTING LAYERS
Application Service
(SaaS)
Application Platform
Server Platform
Storage Platform Amazon S3, Dell, Apple, ...
3Tera, EC2, SliceHost,
GoGrid, RightScale, Linode
Google App Engine, Mosso,
Force.com, Engine Yard,
Facebook, Heroku, AWS
MS Live/ExchangeLabs, IBM,
Google Apps; Salesforce.com
Quicken Online, Zoho, Cisco

9. CLOUD COMPUTING SERVICE
LAYERS
Services
Application
Development
Platform
Storage
Hosting
Description
Services – Complete business services such as
PayPal, OpenID, OAuth, Google Maps, Alexa
Services
Application
Focused
Infrastructure
Focused
Application – Cloud based software that
eliminates the need for local installation such
as Google Apps, Microsoft Online
Storage – Data storage or cloud based NAS
such as CTERA, iDisk, CloudNAS
Development – Software development
platforms used to build custom cloud based
applications (PAAS & SAAS) such as
SalesForce/ServiceNow
Platform – Cloud based platforms, typically
provided using virtualization, such as Amazon
ECC, Sun Grid
Hosting – Physical data centers such as those
run by IBM, HP, NaviSite, etc.

10. CLOUD IMPLEMENTATION TYPES Private Cloud
Client owned and
managed.
Access limited to client
and its
partner network.
Drives efficiency,
standardization
and best practices while
retaining
greater customization
and
control.
Public Cloud
Service provider owned
and
managed.
Access by subscription.
Delivers select set of
standardized
business process,
application
and/or infrastructure
services on
a flexible pay per use
basis.

11. SOME COMMERCIAL CLOUD
OFFERINGS

12. BENEFITS – 1/2
Cloud computing enables companies and applications, which are system
infrastructure dependent, to be infrastructure-less.
By using the Cloud infrastructure on “pay as used and on demand”, all of us
can save in capital and operational investment!
Clients can put their data on the platform instead of on their own desktop PCs
and/or on their own servers.
They can put their applications on the cloud and use the servers within the
cloud to do processing and data manipulations etc.
Helps to use applications without installations. Access the personal files and
data from any computer with internet access. This technology allows much
more efficient computation by centralizing storage, memory and processing .
Mitigate the risks of over-provisioning and under-provisioning. No up-front
cost, invest on other aspects (marketing, technology…), Less maintenance &
operational cost. Save time, time = money.

13. BENEFITS – 2/2
Unlike desktop computing, in which if a hard disk crashes and destroy all
your valuable data, a computer crashing in the cloud should not affect the
storage of your data.
In a world where few individual desktop PC users back up their data on a
regular basis, cloud computing is a data-safe computing platform!
Universal document access - that is not a problem with cloud computing,
because you do not take your documents with you.
Latest version availability - when you edit a document at home, that edited
version is what you see when you access the document at work.
Easier group collaboration - sharing documents leads directly to better
collaboration.
Device independence - you are no longer tethered to a single computer or
network.

14. CHALLENGES – 1/2
Use of cloud computing means dependence on others and that could possibly
limit flexibility and innovation:
The others are likely become the bigger Internet companies like Google and IBM,
who may monopolize the market.
Some argue that this use of supercomputers is a return to the time of mainframe
computing that the PC was a reaction against.
Security could prove to be a big issue:
It is still unclear how safe out-sourced data is and when using these services
ownership of data is not always clear.
There are also issues relating to policy and access:
If your data is stored abroad whose policy do you adhere to?
What happens if the remote server goes down?
How will you then access files?
There have been cases of users being locked out of accounts and losing access to
data.

15. CHALLENGES – 2/2
Requires a constant Internet connection:
Cloud computing is impossible if you cannot connect to the Internet.
Since you use the Internet to connect to both your applications and documents, if
you do not have an Internet connection you cannot access anything, even your own
documents.
A dead Internet connection means no work and in areas where Internet connections
are few or inherently unreliable, this could be a deal-breaker.
Does not work well with low-speed connections:
Similarly, a low-speed Internet connection, such as that found with dial-up services,
makes cloud computing painful at best and often impossible.
Web-based applications require a lot of bandwidth to download, as do large
documents.
Features might be limited:
This situation is bound to change, but today many web-based applications simply
are not as full-featured as their desktop-based applications.
For example, you can do a lot more with Microsoft PowerPoint than with Google
Presentation's web-based offering

16. CLOUD ADAPTATION
 Are your applications ready to run in the Cloud?
 Will you be able to receive technical support for the service?
 Ownership and access of your data
 Fluctuating Data Volumes
 Is any part of the Cloud infrastructure outsourced or subcontracted?
 Compliance
 Cost analysis
 Migration Strategy
 Dealing with Downtime
 Data Migration
Source

17. REFERENCE
Wikipedia http://en.wikipedia.org/wiki/Cloud_computing
Above the Clouds: A Berkeley View of Cloud Computing:
http://www.eecs.berkeley.edu/Pubs/TechRpts/2009/EECS-2009-28.pdf
How Cloud Computing Is Changing the World:
http://www.businessweek.com/technology/content/aug2008/tc2008082_445
669.htm
The Future of Cloud Computing:
http://mba.tuck.dartmouth.edu/digital/Programs/MBAFellowsProgramArchive
/08_rana.pdf