This document discusses cloud computing, including definitions of cloud computing, the different types of cloud computing services (SaaS, PaaS, IaaS), examples of cloud platforms like Google Cloud, and advantages like reduced costs, scalability, and environmental benefits compared to traditional computing. It also notes some disadvantages like reliance on internet connectivity and lack of access offline.

2. CLOUD COMPUTING
When it's smarter to rent
than to buy..
Presented by
D.Datta Sai Babu
4th Information Technology
Tenali Engineering College

3. What is Cloud Computing?.
• An environment created in a user’s machine from
an on-line application stored on the cloud and run
through a web browser.
• In simple Cloud computing is using the internet to
access someone else's software running on someone
else's hardware in someone else's data center.

4. Cloud Computing Services
► Software
as a Service (SaaS)-End Users
► Platform
as a Service (PaaS)-Application
Developers
► Infrastructure
Architects
as a Service (IaaS)-Network

5. The NEW “Cloud Pyramid”

6. Software as a Service-End Users
►
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..,
►
Also they can provide security features such as SSL encryption,
a cryptographic protocol.

7. Application provided by Cloud Computing –
Google Cloud

8. Platform as a Service (PaaS)Application Developers
►
Give us nice API (Application Programming Interface) and take
care of the implementation.
►
In the PaaS model, cloud providers deliver a computing platform
and/or solution stack typically including operating system,
programming language execution environment, database, and
web server.
►
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 etc.

9. Infrastructure as a Service (IaaS)Network Architect
►
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.
►
cloud providers offer computers – as physical or more often as
virtual machines – raw (block) storage, firewalls, load balancers,
and networks

10. Cloud Architecture

11. Modes of Clouds
Public Cloud
► Computing infrastructure is hosted by cloud vendor at the vendors
premises.
► and can be shared by various organizations.
► E.g. : Amazon, Google, Microsoft, Sales force
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
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.

12. Cloud Operating Systems
► Eye
OS
► Amoeba OS
► Glide OS
► Start force
► myGoya
► CorneliOS
► Lucid Desktop
► Cloudo, Ghost, Zimdesk, Start force etc.,

18. Some other Applications
are:
Audio Player
Ever note Viewer
Video Player
Media Player
Flash Player
Google Document Viewer
Messenger
Sticky Note
Web Browser Lite

19. Distributed vs. Grid vs. Cloud
D is t r ib u t e d
G r id
C lo u d
T im e
W e e k s to M o n th s
D a y s to W e e k s
M in u te s
S c a la b ility
S l o w e s t , R i g i d & C o s t ly
S lo w e r , s o m e w h a t
f le x i b le , C o s t ly
I n s t a n t , F l e x i b le , P a y p e r-u s a g e
Cost
H ig h C a p E x
C o s t ly , s o m e t i m e s
m o n th /y e a r c o n tra c ts ,
no C apE x
N o c o n tra c ts , u s a g e
b a s e d , n o u p fro n t c o s ts
“ G re e n ”
Low
Low
H i g h - v i r t u a li z e d
P r ic in g m o d e l
B u y S e r v e r s & C o lo
c o s ts w h e th e r u s e d o r
not
R e n t S e r v e r s & H o s tin g
c o s ts w h e th e r u s e d o r
not
R ent based on usage
o n ly

20. Is Cloud Computing reduces E-Waste?.
► Green
IT Cloud Computing
► Cloud
Computing is Eco-Friendly.
► We
can reduce E-waste by using Cloud
Computing i.e. by Infrastructure as a Service
(IaaS).
► Cloud
► Can
Computing Helps to Accelerate Green IT
reduce Global Warming too..

21. F a c e b o o k D a te C e n te r
G o o g le S e rv e r

22. Disadvantages of Cloud Computing
►
Cloud computing is impossible if you cannot connect to the
Internet.
►
Since you use the Internet to connect to both your applications
and documents, if you do not have an Internet connection you
cannot access anything, even your own documents.
►
A dead Internet connection means no work and in areas where
Internet connections are few or inherently unreliable, this could
be a deal-breaker.
►
When you are offline, cloud computing simply does not work.

23. Commercial Clouds

24. CONCLUSION

25. Thanking You
Queries?..