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
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.
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
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.,
13.
14.
15.
16.
17.
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.