The document defines cloud computing and discusses its key characteristics and service models. It outlines the different types of cloud deployments including public, private, community, and hybrid clouds. It also discusses the advantages of cloud computing such as cost savings, scalability, and device independence, as well as concerns around internet dependency and vendor lock-in.

1.  ATIF KHATRI
 ERAM KHAN
 AFREEN KHAN
 MIRAZ SHAIKH
 MOHD NOMAN WAGHU
 AKSHAY RADDI
 MAULAALEE PATEL

2.  Definition:
 Cloud computing is Internet-based computing, whereby
shared resources, software and information are provided to
computers and other devices on-demand, like electricity.
 On-demand self-service Internet infrastructure where you
pay-as-you-go and use only what you need, all managed by
a browser, application or API.
 Refers to accessing computing resources that are typically
owned and operated by a third-party provider on a
consolidated basis in data center locations

3. Individuals Corporations Non-Commercial
Cloud Middle Ware
Storage OS Network Service(apps) SLA(monitor),
Provisioning Provisioning Provisioning Provisioning Security, Billing,
Payment
Resources
Services Storage Network OS

4.  Cloud computing is an umbrella term used to
refer to Internet based development and
services
 A number of characteristics define cloud data,
applications services and infrastructure:
• Remotely hosted: Services or data are hosted on
remote infrastructure.
• Ubiquitous: Services or data are available from
anywhere.
• Co modified: - you pay for what you would want!

6.  Client
 Cloud platform services or "Platform as a Service (PaaS)"
deliver a computing platform and/or solution stack as a
service, often consuming cloud infrastructure and sustaining
cloud applications. It facilitates deployment of applications
without the cost and complexity of buying and managing
the underlying hardware and software layers
 Application
 Cloud application services or "Software as a Service (SaaS)"
deliver software as a service over the Internet, eliminating
the need to install and run the application on the customer's
own computers and simplifying maintenance and support.
Key characteristics include

7.  Platform
 Cloud platform services or "Platform as a Service (PaaS)"
deliver a computing platform and/or solution stack as a
service, often consuming cloud infrastructure and sustaining
cloud applications. It facilitates deployment of applications
without the cost and complexity of buying and managing
the underlying hardware and software layers.
 Infrastructure
 Cloud infrastructure services or "Infrastructure as a Service
(IaaS)" delivers computer infrastructure, typically a platform
virtualization environment as a service. Rather than
purchasing servers, software, data center space or network
equipment, clients instead buy those resources as a fully
outsourced service.

8.  Cloud are transparent to users and
applications, they can be built in multiple ways
• Branded products, proprietary open source,
hardware or software, or just off-the-shelf
PCs.
 In general, they are built on clusters of PC
servers and off-the-shelf components plus
Open Source software combined with in-house
applications and/or system software.

9.  Cost
 Agility
 Scalability
 Availability
 Device and location independence
 Metering

10.  PUBLIC
 Public cloud or external cloud describes cloud
computing in the traditional mainstream sense,
whereby resources are dynamically provisioned
on a fine-grained, self-service basis over the
Internet, via web applications/web services, from
an off-site third-party provider who shares
resources and bills on a fine-grained utility
computing basis

11. Private cloud is cloud infrastructure operated solely for
a single organization, whether managed internally or
by a third-party and hosted internally or externally.
Undertaking a private cloud project requires a
significant level and degree of engagement to
virtualized the business environment, and it will require
the organization to reevaluate decisions about existing
resources. When it is done right, it can have a positive
impact on a business, but every one of the steps in the
project raises security issues that must be addressed in
order to avoid serious vulnerabilities.

12.  Community
 A community cloud may be established where
several organizations have similar requirements
and seek to share infrastructure so as to realize
some of the benefits of cloud computing. With the
costs spread over fewer users than a public cloud
(but more than a single tenant) this option is more
expensive but may offer a higher level of privacy,
security and/or policy. Examples of compliance
community cloud include Google's "Gov Cloud"

13. • Amazon
• Microsoft windows Azure
• Savvis
• Google AppEngine
• Vmware cloud
• Rack space
• Verizon
• Go grid
• AppNexus

14.  VM technology allows multiple virtual machines to run
on a single physical machine.
 A virtual machine (VM) is a simulation of a machine
(abstract or real) that is usually different from the target
machine (where it is being simulated on).
 Virtual machines may be based on specifications of a
hypothetical computer or emulate the architecture and
functioning of a real world computer.

15.  Advantages of virtual machines:
• Run operating systems where the physical hardware
is unavailable,
• Easier to create new machines, backup machines
• Software testing using “clean” installs of operating
systems and software,
• Emulate more machines than are physically
available,
• Timeshare lightly loaded systems on one host,
• Debug problems
• Easy migration of virtual machines.

16.  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.

17.  Easier group collaboration:
• Sharing documents leads directly to better collaboration.
• Many users do this as it is an important advantages of cloud
computing
 Multiple users can collaborate easily on documents and
projects
 Device independence.
• You are no longer tethered to a single computer or network.
• Changes to computers, applications and documents follow you
through the cloud.
• Move to a portable device, and your applications and
documents are still available.

18.  Improved performance:
• With few large programs hogging your computer's memory,
you will see better performance from your PC.
• Computers in a cloud computing system boot and run faster
because they have fewer programs and processes loaded into
memory
 Reduced software costs:
• Instead of purchasing expensive software applications, you can
get most of what you need for free-ish!
 Most cloud computing applications today, such as the Google
Docs suite.
• Better than paying for similar commercial software

19.  Unlimited storage capacity:
• Cloud computing offers virtually limitless storage.
• Your computer's current 1 Tbyte hard drive is small compared
to the hundreds of Pbytes available in the cloud.
 Increased data reliability:
• 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!

20.  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.

21.  General Concerns:
• Each cloud systems uses different protocols and
different APIs
 may not be possible to run applications between
cloud based systems
• Amazon has created its own DB system (not SQL 92),
and workflow system (many popular workflow
systems out there)
 So your normal applications will have to be
adapted to execute on these platforms.

22.  Presence of Internet will boost its future
 No more Software Updates
 Hardware Optional
 Freedom from Wallet
 Paperless Society