3. Agenda.
• What is cloud computing?
• Characteristics of cloud computing.
• Cloud service models.
• Deployment models.
• Pros and cons.
• Fear of cloud.
• New directions.
• What does a shift towards cloud computing mean?
• Who gains?
• Who loses out?
• Cloud computing scenario.
• Latest updates of cloud computing.
• Conclusion.
4. • Third
Largest
Revolution
In
IT industry.
Following personal computer
Revolution and internet revolution.
5. What is cloud computing?
• Cloud computing is a technology that uses the internet and
central remote servers to maintain data and applications.
• Cloud computing allows consumers and businesses to use
applications without installation and access their personal files
at any computer with internet access.
• This technology allows for much more efficient computing by
centralizing storage, memory, processing and bandwidth.
• “Cloud computing is the delivery of computing as a service
rather than product where shared resources, software and
information are provided to users as an utility(like power grid)
over network”.
6. • A simple example of cloud computing is Yahoo
email, Gmail, or Hotmail etc. You don't need a software or a
server to use them. All a consumer would need is just an
internet connection and you can start sending emails.
• The server and email management software is all on the
cloud ( internet) and is totally managed by the cloud service
provider Yahoo , Google etc. The consumer gets to use the
software alone and enjoy the benefits.
• The analogy is , 'If you need milk , would you buy a cow ?' .
Just to get this benefit (milk) why should a consumer buy a
(cow) software /hardware?
8. Characteristics of cloud computing
• Maintenance:- maintenance is easier , because they do not need to
be installed on each user’s computer and can be accessed from
different places.
• Virtualization:- virtualization technology allows servers and storage
devices to be shared and utilization be increased.
• Device and location independence:-enable users to access systems
using a web browser regardless of their location or what device they
are using (e.g:- PC, mobile phone).
• Application programming interface:-(API) accessibility to software
that enables machines to interact with cloud in the same way the
user interface facilitates interaction between humans and
computers.
9. cloud service models
• Infrastructure as a service( Iaas ).
• Platform as a service( Paas ).
• Software as a service( Saas ).
10. • Infrastructure as a service:-A consumer can get service
through the Internet. This type of service is called
Infrastructure as a Service (IaaS). Internet-based services such
as storage and databases are part of the IaaS.
• Platform as a service:-PaaS offers full or partial application
development that users can access typically including
operating system, programming language execution
environment, database, and web server.
• Software as a service:-In this model, cloud providers install
and operate application software in the cloud and cloud users
access the software from cloud clients. This eliminates the
need to install and run applications on the user’s system.
11. Deployment models
• Private cloud:-The cloud infrastructure is operated solely for An
organization.
Eg:-Amazon virtual private cloud.
• community cloud:-The cloud infrastructure is shared by several
organizations and supports a specific community that has shared
concerns.
Eg:-Google apps for government.
• public cloud:-The cloud infrastructure is made available to the
general public.
Eg:-Microsoft windows azure.
• Hybrid cloud:-The cloud infrastructure is a composition of two or
more clouds (private, community, or public).
Eg:-VMware vcloud.
12.
13.
14. Fear of cloud
• What are the “security” concerns that are preventing
companies from taking advantage of cloud? These problems
may only become apparent after more widespread adoption
of cloud computing as a technology.
• Cheap data and data analysis:- The rise of cloud computing
has created enormous data sets that can be monetized by
applications such as advertising.
Google, for instance, leverages its cloud infrastructure to
collect and analyze consumer data for its advertising network.
Collection and analysis of data is now possible cheaply.
Because of the cloud, attackers potentially have
massive, centralized databases available for analysis. For
example, Google is essentially doing cheap data mining when
it returns search results. How much more privacy did one have
before one could be googled?
15. New directions
• The core issue is that with the advent of the cloud, the cloud
provider also has some control of the cloud users’ data.
Information-centric security:- In order for enterprises to
extend control to data in the cloud, Data needs to be self-
describing and defending, regardless of its environment. Data
needs to be encrypted and packaged with a usage policy.
16. • Privacy-Enhanced Business Intelligence:-A different approach
to retaining control of data is to require the encryption of all
cloud data.
• The problem is that encryption limits data use.
• In particular searching and indexing the data becomes
problematic.
• For example, if data is stored in clear-text, one can efficiently
search for a document by specifying a keyword. This is
impossible to do with encryption schemes.
• Cryptography may offer new tools to solve these problems.
Cryptographers have recently invented versatile encryption
schemes that allow operation and computation on the cipher
text.
17. What does a shift towards cloud
computing mean?
• A paradigm shift to cloud computing will affect many different
sub-categories in computer industry such as software
companies, internet service providers (ISPs) and hardware
manufacturers.
18. Who gains?
• Internet-based companies that could gain from a shift
towards cloud computing include:-
Amazon.com.
Google.
Microsoft.
19. Who loses out?
• Traditional software producers that could have some
catching up to do if cloud computing ultimately wins out
include:-
Oracle.
SAP(system applications and products in data processing).
21. Latest updates of cloud computing
• A Microsoft-commissioned study, conducted by IDC, predicts
that cloud computing will generate over two million jobs in India
and nearly 14 million new jobs worldwide by 2015. More than
50 per cent of these jobs will be generated in the small and
medium businesses.
• Within two months, Hewlett-Packard will offer a large and
powerful cloud computing service similar to Amazon Web
Services, but with more business-oriented features, according
the head of the project.
• Today, Intel IT operates a massive, worldwide computing
environment that supports about 78,000 Intel employees and
includes approximately 100,000 servers.
22. Conclusion
• Cloud computing is still struggling in its infancy, with positive
and negative comments made on its possible implementation
for a large-sized enterprise.
• Cloud computing holds some strong promises.
Highly available.
Dynamically allocate resources.
Pay only for resources that u use.
• But of course there are pitfalls. Cloud computing might not be
the best solution for you. It depends on the size of your
company, your line of business.
