5. And the answer is……
Cloud computing is a model for enabling
ubiquitous, convenient, on-demand network access
to a shared pool of configurable computing
resources that can be rapidly provisioned and
released with minimal management effort or service
provider interaction.
6. In simple words….
Cloud computing means that instead
of all the computer hardware and software
you're using sitting on your desktop, or
somewhere inside your company's network,
it's provided for you as a service by another
company and accessed over the Internet.
use application without installing and
access to all file in any computer through
internet.
7. Query in Google.
Email – mail client to hotmail.
Google documents preparation.
Social networks
Health care
Back up service
Banking and financing.
8. Service models…
Infrastructure as a service (IaaS)
- Network architects
Platform as a service (PaaS)
- Application developers
Software as a service (SaaS)
- End users
9. Infrastructure as a service(IaaS)…
also known as hardware as a service.
is a computing power that you can rent for a limited
period of time.
allows existing applications to be run on a cloud
suppliers hardware.
e.g. Web hosting – pay a monthly or a per mb/gb fee
to a hosting company.
10. Platform as a service(PaaS)…
is a platform for developers to write and create their
own SaaS i.e. applications.
which means rapid development at low cost.
E.g.: Salesforce.com, Windows Azure, Google app
engine etc.
11. Software as a service(SaaS)…
Just run it for me!
also known as On-demand Service.
is an application that can be accessed from anywhere
on the world as long as you can have an computer
with an Internet Connection.
We can access this cloud hosted application without
any additional hardware or software.
E.g. : G-mail, Yahoo mail, Hotmail etc..,
13. Deployment models…
a. Public cloud
Services are rendered over a network that is
open for public use.
Computing infrastructure is hosted by cloud
vendor at the vendors premises.
can be shared by various organizations.
E.g. : Amazon, Google, Microsoft, Sales force
14. Models cntd….
b. Private cloud
The computing infrastructure is dedicated to a
particular organization and not shared with
other organizations.
more expensive and more secure when
compare to public cloud.
E.g. : HP data center, IBM, Sun, Oracle, 3tera
15. models cntd…
c. Hybrid cloud
Organizations may host critical applications on
private clouds.
Where as relatively less security concerns on
public cloud.
Usage of both public and private together is
called hybrid cloud.
18. Several large Web companies are now exploiting the fact
that they have data storage capacity that can be hired out to
others.
This is in contrast to local data storage, where data is
stored on the hard drive of a local desktop or a laptop.
e.g. Amazon’s Elastic Compute Cloud (EC2) and Simple
Storage Solution (S3).
Cloud storage
21. Advantages & disadvantages…
pros
•Lower upfront costs and reduced
infrastructure costs.
•Easy to grow your applications.
•Instant software updates.
• Only pay for what you use.
• Overall environmental benefit (lower carbon
emissions) of many users efficiently sharing large
systems.
22. cons
•Higher ongoing operating costs.
• Greater dependency on service providers.
• What happens if your supplier suddenly decides
to stop supporting a product or system you've
come to depend on?
• Potential privacy and security risks of putting
valuable data on someone else's system in an
unknown location.
• Dependency on a reliable Internet connection.
• renting a fully furnished flat & purchasing one.