Cloud computing refers to accessing computer resources such as data storage and processing power via the internet rather than a direct connection to a physical server or device. Key aspects of cloud computing include on-demand access to scalable and virtualized resources, utility-based pricing, and centralized management. Major cloud providers offer infrastructure, platform, and software services that allow users and organizations to access applications and store data remotely.

1. Dr.Ram Mohan.K.P

2. Cloud computing
• Cloud computing is a recently evolved computing
terminology based on utility and consumption
of computing resources.
• It involves deploying groups of remote servers
and software networks that allow centralized
data storage and online access to computer
services or resources.
• Cloud computing relies on sharing of resources to
achieve coherence and econimies of scale, similar
to a utility (like the Electricity Grid) over a
network

3. Definition of Cloud Computing
A standardised IT capability (services, software or infrastructure)
delivered via internet technologies in a pay-per-use, self-service way
A style of computing where massively scalable IT-related capabilities
are provided “as a service” using internet technologies to multiple
external customers
Cloud services are shared services, under virtualised management,
accessible over the internet

5. History of cloud computing
• Cloud computing in its modern sense appeared early
as 1996,.
• The popularization of the term can be traced to 2006
when Amazon.com introduced the Elastic Compute
Cloud.
• The actual term "cloud" borrows from telephony in
that telecommunications companies, who until the
1990s offered primarily dedicated point-to-point data
circuits, began offering Virtual Private Network (VPN)
services with comparable quality of service but at a
much lower cost.

6. • The goal of cloud computing is to allow users
to take benefit from all technologies, without
the need for deep knowledge about or
expertise with each one of them.
• The cloud aims to cut costs, and helps the
users focus on their core business instead of
being impeded by IT obstacles.

7. • Cloud resources are usually not only shared by
multiple users but are also dynamically
reallocated per demand.
• For example, a cloud computer facility that
serves European users during European business
hours with a specific application (e.g., email) may
reallocate the same resources to serve North
American users during North America's business
hours with a different application (e.g., a web
server).
• This approach maximize the use of computing
power thus reducing environmental damage as
well since less power, air conditioning, rack
space, etc. .

8.  Cloud computing refers to the use and access of multiple server
based computational resources via an Internet connection .
Cloud users may access the server resources using a computer, ,
smart phone, or other device.
 Applications are provided and managed by the cloud server and
data is also stored remotely in the cloud configuration.
 Users do not download and install applications on their own
device or computer; all processing and storage is maintained by
the cloud server.
Cloud Computing- CONCEPT

10. virtualization
• The main enabling technology for cloud computing is
virtualization . Virtualization software separates a
physical computing device into one or more "virtual"
devices, each of which can be easily used and managed
to perform computing tasks.
• Virtualization provides the agility required to speed up
IT operations, and reduces cost by increasing
infrastructure utilization
• By minimizing user involvement, automation speeds
up the process, reduces labor costs and reduces the
possibility of human errors.

11. Characteristics of the Cloud
• On-demand & self-service
• 2.Broad network access
• 3.Resource pooling (location independent)
• 4.Rapid elasticity
• 5.Agility
• 6.Measured service (& mostly postpay)

12. Cloud Components
It has three
components
1.) Client computers
2.) Distributed
Servers
3.) Datacenters

13. Clients
Clients are the device that the
end user interact with cloud.
three types of clients:
1.) Mobile
2.) Thick
3.) Thin (Most Popular)

14. Distributed servers
Often servers are in
geographically different
places, but server acts as
if they are working next to
each other.

15. Datacenter
It is collection
of servers
where
application is
placed and is
accessed via
internet.

16. Central Server
• It Administers the system such as
monitoring traffic, client demands
to ensure everything runs smoothly.
• It uses a special type of software
called Middleware.
• Middleware allow computer to
communicate each other.

17. What are Cloud Stacks?
Cloud Services can be dived into 3 stacks:
1. Infrastructure as a Service: IaaS
2. Platform as a Service: PaaS
3. Software as a Service: SaaS

18. Infrastructure as a Service (IaaS)
This is the base layer of the cloud stack.
It serves as a foundation for the other two layers, for their execution
your application will be executed on a virtual computer.
You have the choice of virtual computer, where you can select a
configuration of CPU, memory & storage that is optimal for your
application.
The whole cloud infrastructure viz. servers, routers, hardware
based load-balancing, firewalls, storage & other network
equipments are provided by the IaaS provider.
The customer buy these resources as a service on a need basis.

19. Platform as a Service (PaaS)

20. Software as a Service (SaaS)
This is the Top most layer of the cloud computing
stack - directly consumed by end user – i.e. SaaS
(Software as a Service).
•Next generation SaaS promises everything as a service
over the internet.
•Cloud computing started with a similar premise.
•A computing paradigm where there exists a flexible set of
computing resources across the internet.
•

23. • The term "moving to cloud" also refers to an
organization moving away from a traditional
CAPEX model (buy the dedicated hardware
and depreciate it over a period of time) to the
OPEX model (use a shared cloud infrastructure
and pay as one uses it).

24. Migrating Your Business to the Cloud
HR CRM
ERPSCM

25. Deployment of Cloud
Service
• Public Cloud
• Private Cloud
• Community Cloud
• Hybrid Cloud(Combined
Cloud)

26. Types of Cloud
• Public Cloud – Available to the general public or large industry
group and is owned by an organisation selling cloud services
• Community Cloud – Shared by several organisations and
supports a specific community that has shared concerns
• Private Cloud – Operated solely for an organisation or company
• Hybrid Cloud – Combination of two of the above, they remain
unique entities but are bound together by standardised
technologies

27. Characteristics of a Cloud Environment
• Dynamic- One of the keys to cloud
computing is on-demand
provisioning
• Massively scalable- The service
must react immediately to your
needs
• Multi-tenant- Cloud computing, by
its nature, delivers shared services

28. Characteristics of a Cloud Environment
• Self-service - As a user, you can use
the service as you require
• Per-usage based pricing model -
You should only ever pay for the
amount of service you consume
• IP-based architecture - Cloud
architectures are based on virtualised,
internet based technologies

29. PROS AND CONS :
ADVANTAGES:
Software as a Subscription
Reduced Software Maintenance
Increased Reliability
Environmentally Friendly
Cost Reduction
Portability/Accessibility

30. BENEFITS OF CLOUD
• Reduce spending on technology
• Globalize your work force
on the cheap
• Reduce capital cost
• Improve accessibility
• Improve flexibility
• Less personal training is needed
• Monitor project more effectively
• Achieve economic of scale

31. Why cloud service is
popular?
• Reduce the complexity of networks.
• Do not have to buy software licenses.
• Customization.
• Cloud providers that have specialized
in a particular area (such as e-mail)
can bring advanced services that a
single company might not be able to
afford or develop.
• scalability, reliability, and
efficiency.
• Info. at cloud are not easily lost.

32. DISADVANTAGES:
Bandwidth could bust your budget
App performance could suffer
Data might not be cloud-worthy
Too big to scale

33. Security and privacy
• Cloud computing poses privacy concerns because the
service provider can access the data that is on the
cloud at any time.
• It could accidentally or deliberately alter or even
delete information.
• Many cloud providers can share information with third
parties if necessary for purposes of law and order even
without a warrant. That is permitted in their privacy
policies which users have to agree to before they start
using cloud services
• Users can encrypt data that is processed or stored
within the cloud to prevent unauthorized access.

34. • hackers are spending substantial time and effort
looking for ways to penetrate the cloud.
• "There are some real Achilles' heels in the cloud
infrastructure that are making big holes for the
bad guys to get into”.
• Because data from hundreds or thousands of
companies can be stored on large cloud servers,
hackers can theoretically gain control of huge
stores of information through a single attack — a
process he called "hyperjacking".

35. • According to the Cloud Security Alliance, the
top three threats in the cloud are
• “Insecure Interfaces and API’s”,
• Data Loss & Leakage”, and
• “Hardware Failure”
• which accounted for 29%, 25% and 10% of all
cloud security outages respectively - together
these form shared technology vulnerabilities

36. • Physical control of the computer equipment
(private cloud) is more secure than having the
equipment off site and under someone else's
control (public cloud).
• This delivers great incentive to public cloud
computing service providers to prioritize
building and maintaining strong management
of secure services

37. Future of CLOUD COMPUTING
 The 55% of respondents believe that cloud computing
has a lower total cost of ownership (TCO).
 74 percent of respondents indicated that cloud
computing would either lead to an increase in hiring or
have no impact, while rest of respondents expected
any decrease in hiring based on cloud adoption.
 39 percent indicating that the cloud would make for
less or more complex environments.

39. 70 billions connections & 1/3 of
consumer digital content in the cloud
by 2020 & 2016 respectively
• In 2012, about 2.5 exabytes are created every
day and is expected to double every 40
months. An exabyte is 10,000 times of a
petabyte (approx 20 million filing cabinets)

40. Conclusions
• Cloud Computing is the fastest growing part of IT
• Tremendous benefits to customers of all sizes
• Cloud services are simpler to acquire and scale
up or down

41. Application
• Social Networking sites.
• E-mail sites.
• Search Engines.
• Many more services OVER THE
INTERNET.

42. Free cloud computing applications
• Photo editing software
• Online file storage
• Twitter related applications
• Digital Video
• Creating your image album
• Photo editing software
• Anti-virus applications on the web
• Editing documents, spreadsheets and powerpoints
• Finding your way on a map
• e-commerce software
• Miscellaneous applications

43. Top 10 Cloud providers
• 1. Amazon:
2. Akamai
3. IBM.
4. Enki Consulting.
5. Rackspace:
6. Verizon:
7. Google
8. Linode:
9. Microsoft
10. Salesforce:
•

44. Main cloud services
• 1. BaaS - Backup as a Service
• 2. CaaS - Communications as a Service
• 3. DaaS - Desktop as a Service
• 4. DaaS - Database as a Service
• 5. HaaS - Hardware as a Service
• 6. IaaS - Identity as a Service
• 7. IaaS - Infrastructure as a Service
• 8. PaaS - Platform as a Service
• 9. SaaS - Software as a Service
• 10. SaaS - Storage as a Service

45. Best Free Cloud Storage Providers and
Their Features
• 1. Google Drive
• Free storage: 5 GB
• Approximate annual price for 20 GB: $29.88
• Max file size allowed: 10 GB
• Desktop apps: Windows, Mac
• Mobile apps: Android, iOS coming soon

46. 2. Dropbox
• Free storage: 2 GB (Get more space through
referrals.)
• Approximate annual price for 50 GB: $99
• Approximate annual price for 100 GB: $199
• Max file size allowed: 300 MB via browser,
unlimited via desktop
• Desktop apps: Windows, Mac, Linux
• Mobile apps: Android, iOS, BlackBerry

47. 3. Apple iCloud
• Free storage: 5 GB
• Approximate annual price for 20 GB: $40
• Approximate annual price for 50 GB: $100
• Max file size allowed: 25 MB for free users,
250 MB for paid users
• Desktop apps: Windows, Mac
• Mobile apps: iOS only

48. 4. Microsoft SkyDrive
• Free storage: 7 GB
• Approximate annual price for 20 GB: $10
• Approximate annual price for 100 GB: $50
• Max file size allowed: 2 GB
• Desktop apps: Windows, Mac
• Mobile apps: iOS, Windows Phone