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. It provides users the ability to store and access their data and programs from any computer or mobile device with internet access. The key benefits of cloud computing are lower costs, universal data access, and scalability. However, it also poses security and reliability risks due to dependence on a third-party provider and constant internet connection.

1. CLOUD COMPUTING
Presented by:
D.Madhavi Latha,
3rd year,
Information Technology,
GMRIT,
Rajam.

2. CONTENT
1. Abstract
2. Introduction
3. What is Cloud Computing?
4. Why Cloud Computing?
5. Characteristics
6. Cloud Architecture
7. Cloud Storage
8. Advantages
9. Disadvantages
10. Conclusion

3. 1. ABSTRACT
“Cloud Computing” is a versatile technology that can support a broad-spectrum of
applications. Though there remain questions on aspects such as security and vendor lock-
in, the benefits of this model are many. The two key advantages of this model are ease-of-
use and cost-effectiveness. It is a relatively recent term, builds on decades of research in
virtualization, distributed computing, utility computing, and more recently networking,
web and software services. It is a general term for anything that involves delivering hosted
services over the Internet. It is a virtualized compute power and storage delivered via
platform-agnostic infrastructures of abstracted hardware and software accessed over the
Internet. These shared on-demand IT resources which are created and disposed efficiently.
These are dynamically scalable through a variety of programmatic interfaces and are
billed variably based on measurable usage.

4. 2.INTRODUCTION
With traditional desktop computing, we run copies of software programs on our own
computer. The documents we create are stored on our own pc.
Although documents can be accessed from other computers on the network, they can’t be
accessed by computers outside the network. This is PC-centric.
Unlike traditional computing, this cloud computing model isn’t PC-centric, it’s
document-centric.
With cloud computing, the software programs one use aren’t run from one’s personal
computer, but are rather stored on servers accessed via the Internet.
 When you store your photos online, instead on your home computer, or use webmail or
a social networking site, then you are using a “Cloud Computing” service.

5. 3.WHAT IS CLOUD COMPUTING?
Cloud computing is a type of computing that relies on sharing computing resources
rather than having local servers or personal devices to handle applications.
In cloud computing, the word cloud is used as a metaphor for “the Internet“, so the
phrase cloud computing means “a type of Internet-based computing“, where different
services such as servers, storage and applications are delivered to an organization's
computers and devices through the Internet.
The cloud computing model allows access for information and computer resources from
anywhere that a network connection is available.
 Examples of cloud services include online file storage, social networking sites,
webmail, and online business applications.

6. 4.WHY CLOUD COMPUTING?
 Cloud Computing is User Centric.
 Cloud Computing is Task-Centric.
 Cloud Computing is Powerful.
 Cloud Computing is Accessible.
 Cloud Computing is Intelligent.
 Cloud Computing is Programmable.
 Cloud Computing can significantly reduce the cost and complexity of owning operating
computers and networks.

7. 5.CHARACTERISTICS
Application programming interface.
Device and location independence.
Virtualization.
Reliability.
Maintenance .
Security.
Performance.

8. 6.CLOUD ARCHITECTURE
Individual users connect to the cloud from their own personal computers or portable
devices, over the Internet.
To these individual users, the cloud is seen as a single application, device, or document.
 The hardware in the cloud and the operating system that manages the hardware
connections are invisible.

9. 7.CLOUD STORAGE
Cloud storage means “the storage of data in online in the cloud“, where a company's
data is stored and accessible from multiple distributed and connected resources that
comprise a cloud.
Cloud storage can provide the benefits of greater accessibility and reliability; rapid
deployment; strong protection for data backup, archival and disaster
recovery purposes; and lower over all storage costs as a result of not having to
purchase, manage and maintain expensive hardware.
However, cloud storage does have the potential for security and compliance concerns.

10. 7.CLOUD STORAGE CONTINUED…
There are 3 types of Cloud Storage. They are:
o Public Cloud.
o Private Cloud.
o Hybrid Cloud.
Public Cloud:
• In simple terms, public cloud services are characterized as being available to clients
from a third party service provider via the Internet.
• A public cloud does not mean that a user’s data is publicly visible; public cloud vendors
typically provide an access control mechanism for their users.

11. 7.CLOUD STORAGE CONTINUED…
Private Cloud:
• Private cloud is a phrase used to describe a cloud computing platform that is
implemented within the corporate firewall, under the control of the IT department.
• A private cloud is designed to offer the same features and benefits of public cloud
systems, but removes a number of objections to the cloud computing model including
control over enterprise and customer data, worries about security, and issues connected
to regulatory compliance.
Hybrid Cloud:
• A combination of public cloud storage and private cloud storage where some critical
data resides in the enterprise's private cloud while other data is stored and accessible
from a public cloud storage provider.

12. 7.CLOUD STORAGE CONTINUED…
• Hybrid cloud storage combines the advantages of scalability, reliability, rapid
deployment and potential cost savings of public cloud storage with the security and full
control of private cloud storage.

13. 8.ADVANTAGES
 Lower computer costs.
 Reduced software costs.
 Instant software updates.
 Improved document format compatibility.
 Unlimited storage capacity.
 Universal document access.
 Latest version availability.

14. 9.DISADVANTAGES
Requires a constant Internet connection.
 Does not work well with low-speed connections.
 Features might be limited.
 Can be slow.
 Stored data can be lost.
Organizational changes are needed for adapting new technology.
Requires higher band width, which can increase costs.

15. 10.CONCLUSION
Cloud computing provides a super-computing power .
This cloud of computers extends beyond a single company or enterprise.
The applications and data served by the cloud are available to broad group of users,
cross-enterprise & cross- platform.
Leaders in the industry, such as Microsoft, Google, and IBM, have provided their
initiatives in promoting cloud computing.
Big IT companies are also building their own version of cloud.
But still there are many question have left without an answer and indeed the most
important one is security.