Cloud computing provides utility computing resources and applications over the Internet. It has various deployment and service models including public, private, hybrid, infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). Cloud computing offers advantages like lower costs, improved performance, unlimited storage, and device independence but also disadvantages such as requiring an Internet connection and potential security issues.

1. CLOUD COMPUTING
PRESENTED BY:
NADEEM AHMED

2. Contents
• Introduction
• Definition
• Description
• Working Models
• Working of Cloud Computing
• Cloud Architecture
• Advantages
• Disadvantages
• Cloud storage
• Download for Storage

3. Introduction
• The word cloud computing is comprise of two
words : cloud and computing
• The word cloud means anytime, anywhere or
network
• The word computing means to compute
something such as processor, memory and
storage

4. Definition
• Cloud computing provides us means by which
we can utilize applications as utility over the
internet
• Helps us to create, configure, modify, define or
contrive and customize the applications online.
e.g. Web conferencing, E-mail, Customer
Relationship Management (CRM)

5. Description
• Cloud computing is present within the accessible
location such as:
1) Public Cloud (LAN, MAN, WAN)
they are also known as shareable storage
2) Private Cloud (VPN)
they are also known as dedicated storage

6. Description
• Cloud computing provides us information about
IT
• Nowadays cloud computing is rapidly expanding
in the field of IT
• Cloud computing based on the modern
principles of IT as compared to the traditional
concepts of Grid Computing, Distributive
Computing etc

7. Working Models
• There are two types of models that have been
discussed so far in cloud computing :
1. Deployment Models
2. Services Models

8. Deployment Models
• Deployment models define the type of access to
the cloud, i.e. , how the cloud is located? Cloud
can have any of the four types of access:

10. Deployment Models
• Public Cloud: It allows systems and services to
be easily accessible to the general public. Public
cloud may be less secure because of its openness,
e.g. , e-mail.
• Private Cloud: It allows systems and services
to be accessible within an organization. It offers
increased security because of its private nature.

11. Deployment Models
• Community Cloud: It allows systems and
services to be accessible by group of
organizations
• Hybrid Cloud: It is mixture of public and
private cloud. However, the critical activities are
performed using private cloud while the non-
critical activities are performed using public
cloud

12. Services Models
• Services Models are the reference models on
which the Cloud Computing is based. These can
be categorized into four basic service models as
listed below:

13. Services Models
1. Application as a Service (AaaS)
2. Infrastructure as a Service (IaaS)
3. Platform as a Service (PaaS)
4. Software as a Service (SaaS)

14. Application as a Service
• These are the first kind of cloud computing
• Under this a service is made available to end-
user
• End-user made an account with the service
provider
• The first famous application was web-based
email services by hotmail in 1996

15. Infrastructure as a Service
• Cloud computing vendors offer infrastructure as
a service
• One may avail hardware services such as
processors, memory, networks
• It may be provided on rent or free for some time
span

16. Platform as a Service
• Cloud computing vendors also provide platform
as a service
• In this an operating system is provided to the
user
• It may be provided on rent or free for some time
span
• Some cloud computing vendors are Amazon,
Microsoft, Google etc

17. Software as a Service
• Here a customer upon registration is allowed to
use software accessible through internet
• The data stored on service providers
• It may be provided on rental basis or free for
some time span, after this you have to purchase
it for use
• Expenses based on time of use

18. Working of Cloud Computing
• Cloud Computing consist of two ends:
I. Front End (user, client, computer)
II. Back End (cloud)
• Connection between the front end and the back
end is the internet

19. Working of Cloud Computing
• For understanding of working of cloud
computing suppose that:
• You use Browser to connect to the Google Docs,
so that you can create documents in cloud
• Browser (front end) and Google Docs (back
end), the connection between them is the
internet

20. Working of Cloud Computing
• Front end is visible to the user
• Back end works like a black box and not visible
to the user
• The upper described steps are not the case all
the times
• A custom application could be used to make
connection with the cloud

21. Working of Cloud Computing

22. Cloud Architecture
What is happening inside the cloud?
• Data center is present within the cloud
• It consists of many computers such as servers
• Some of the servers are dedicated to server
requests
• Data server holds the data
• Almost any program could be make to work in a
cloud model

23. Cloud Architecture
• e.g. e-mail, spreadsheet, games, presentations
etc
• The processors are used to monitor the traffic
and load to verify that everything work smoothly
• Servers are connected with each other and form
internal networks
• Cloud provider will take care of maintainance

24. Advantages
• Lower computer costs
• Improved performance
• Reduced software costs
• Instant software updates
• Improved document format compatibility
• Unlimited storage capacity
• Latest version availability
• Device independence

25. 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
• Stored data might not be secure

26. Cloud Storage
• Create an account, username and password
• Content lives with the account in the cloud
• Log onto any computer with Wi-Fi to find your
content

27. Download for Storage
• Download a cloud based app to on your
computer
• App lives on your computer
• Save files to the application
• When connected with the internet it will
synchronize with the cloud
• The cloud can be accessed from any internet
connection