The presentation is an introdcution to cloud computing and gives an overview of forms,components,services and models of cloud computing along with its advantages and disadvantages.

1. Introduction to
Cloud Computing
Presented By:
Rishabh Yadav
B.Tech.(IV)
Electronics Engineering
IIT(BHU) Varanasi

2. Overview
•What is Cloud Computing?
•Why Cloud Computing?
•Forms
•Services
•Models
•Disadvantages
•Conclusion

3. Cloud computing is the delivery of services of the computing a service rather
than a product, whereby shared resources, software, and information are
provided to computers and other devices as a utility over a network (typically
the Internet).
What is Cloud Computing?

5. Why Cloud Computing?
• Lower cost : there is less capital expenditure and you do not have as much equipment to
maintain, so in theory, it is cheaper.
• Easier to manage : software updates and licences are taken care of – and so is security
back-up.
• Agility and scalability : you can be much more agile and scale-up and scale-down much
more easily – and at relatively low cost
• Flexibility – the cloud makes it easier for you to access information from anywhere, any
time on any device, reflecting the changing habits of today’s IT user
• Less power requirements(My internship project)
• Reduces e-waste
• On-demand computing – makes IT a utility that can be consumed on- demand, whenever
and wherever it is needed.

6. Forms of Cloud computing
•Clustering
•Terminal Services
•Virtualization
Server 2
Server 5 Server 4
Server 3
Server 1
OS
Mysql
OS
MySql
OS
MySql
OS
MySql
OS
MySql

7. Cloud Computing Services
•Software as a Service (SaaS)
•Platform as a Service (PaaS)
•Infrastructure as a Service (IaaS)
•and many more

8. Software as a Service(SaaS)
•On-demand Service
•Service that can be accessed from anywhere in the world from a
computer with an internet connection.
•No additional hardware/software is required except some third-party
plugins that too only in few cases.
•Examples: Gmail, Yahoo mail, Youtube , Facebook, Online Games ,etc.

9. Platform as a Service(PaaS)
• Generally used by application developers.
• Providers of PaaS model offers the computing platform and/or
solution stack typically including operating system, programming
language execution environment ,development tools , database and
web server.
• Analogous to “venv” in python
•Ex.: Heroku , Microsoft Azure , Google App Engine ,etc.

10. Infrastructure as a Service(IaaS)
•Hardware as a Service
•IaaS offer physical or virtual machines and other resources such as
raw storage,firewalls,load balancers and networks.
•Example: Oracle Virtualbox ,Xen

11. Models of Cloud Computing
•Public Cloud
Services are rendered over a network and available for public use. These services may be free or offered
on a pay-per-usage model.
Ex.: Amazon , Google , Microsoft
•Private Cloud
Computing infrastructure is dedicated to a particular organization and shared with limited or no
other organizations.
Ex.: Google Data Center,Oracle,3tera
•Hybrid Cloud
It combines the advantages of both the private and public cloud.

12. Disadvantages of Cloud Computing
• Cloud computing is impossible if internet/intranet connection is
unavailable.
• Offline accessing of documents residing on the cloud simply does not
works.
• Security issues & Reliability

13. Conclusion

15. Thank You