This document discusses cloud computing, including its definition, architecture, deployment models, service models, and major providers. Cloud computing involves storing and managing data and running applications over the internet instead of local hardware. It comprises a front-end for user interfaces and a back-end of servers, storage, and other resources. Major deployment models are public, private, community, and hybrid clouds. Main service models are Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). The document outlines several major cloud providers like AWS, Microsoft Azure, Google Cloud, and IBM Cloud and file storage services like OneDrive, Dropbox, and Google Drive.

1. Dr B T Sampath Kumar
Professor
Department of Library and Information Science
Tumkur University, Tumakuru, INDIA
www.sampathkumar.info
Cloud Computing

2. Cloud computing
• Use of remote servers hosted on the Internet
to:
– Store
– Manage and
– Process data, rather than using a local server
or a personal computer.

3. What is cloud?
• The term “Cloud” came from a network design
that was used by network engineers.
• It represents the location of various network
devices and their inter-connection.

4. Why cloud computing?
• Increased computer and mobile users.
• Data storage has become a priority in all
fields.
• Individuals/small scale businesses spent huge
amount of money to maintain their data.
• To store the data in local server, requires a
strong IT support and a storage devices/hubs.
• Cloud computing decreases the hardware and
software demand from the user’s side.

5. Architecture
• Cloud computing comprises of two
components: front end and back end.
• Front end consists client part of cloud
computing system.
• It comprises of interfaces and applications
that are required to access the cloud
computing platform.

6. Cont..
• While back end refers to the cloud itself.
• It comprises of the resources that are required
for cloud computing services.
• It consists of:
– Virtual machines
– Servers
– Data storage
– Security mechanism etc.

7. Cloud models
• Deployment model
– Public
– Private
– Community
– Hybrid
• Service model
– Infrastructure as a Service (IaaS)
– Platform as a Service (PaaS)
– Software as a service (SaaS)

9. Public cloud
• The public cloud is defined as computing
services offered by third-party providers over
the public Internet.
• It is available to anyone who wants to use or
purchase them.
• They may be free or sold on-demand.

10. Private cloud
• Computing resources are deployed for one
particular organization.
• This method is more used for intra-business
interactions.
• The computing resources can be governed,
owned and operated by the same
organization.

11. Hybrid cloud
• A hybrid cloud is a computing environment
that combines a public cloud and a
private cloud by allowing data and
applications to be shared between them.

12. Community cloud
• It is a collaborative effort.
• The infrastructure is shared between several
organizations from a specific community with
common concerns:
– Security
– Compliance
– Jurisdiction

13. Service model
• The three major cloud computing offerings
are:
– Software as a Service (SaaS)
– Platform as a Service (PaaS)
– Infrastructure as a Service (IaaS)

14. Software as a Service (SaaS)
• Software Applications are hosted by a vendor
or service provider and made available to
customers over a network.
• Traditionally, software application needed to
be purchased and then installed it onto your
computer.
• Instead of purchasing the software, SaaS users
can subscribe to it, usually on monthly basis
via internet.

15. Platform as a Service (PaaS)
• It provides a platform and environment to
allow developers to build applications and
services.
• This service is hosted in the cloud and
accessed by the users via Internet.
• It constantly updates & new features are
added.
• Software developers, web developers and
business can benefit from PaaS.

16. IaaS (Infrastructure as a Service)
• It provides computing infrastructure like
– Virtual server space
– Network connections
– Bandwidth

17. Cloud service providers
• Cloud service providers (CSP) are companies
that offer:
– Network services
– Infrastructure, or
– Business applications in the cloud.

18. Amazon Web Services (AWS)
• Amazon Web Services is a cloud computing
platform which provides services such as:
– Database storage
– Content delivery

19. Microsoft Azure
• Microsoft Azure is a cloud computing service
which is used for building, testing, deploying
and managing the application.

20. Google Cloud Platform
• The Google cloud platform is basically used for
Google search and YouTube.
• There are various services offered by Google
Cloud such as:
– Data analysis
– Machine learning, and
– Data storage.

21. IBM Cloud Services
• IBM Cloud computing services are also
helping:
– home appliance manufacturer
– retailer and
– medical supply businesses.

22. Adobe Creative Cloud
• It consists of many applications and services
that provide access to a collection of software
which can be used for:
– Video editing
– Web development
– Photography, and
– Graphic designs.

23. Onedrive
• It is Microsoft’s free online file storage service.
• It allows sharing individual files via email or on
social networks.

24. DropBox
• It is a very popular service for file storage and
sharing purposes.
• Any file you save to Dropbox is automatically
and instantly saved to your computer, phone,
and the Dropbox website.
• You can edit files in your Dropbox from your
phone and share them freely with anyone
when required.

25. Google drive
• Google Drive is a file storage developed
by Google.
• It allows users to store files on their servers,
synchronize files across devices, and share
files.

26. Benefits of cloud computing
• Lower IT infrastructure
• Improved performance
• Instant software updates
• Improved compatibility between Operating
systems
• Backup and recovery
• Performance and Scalability
• Increased storage capacity
• Increase data safety