This unit includes the following content : *Introduction to cloud computing *Move to cloud computing *Types of cloud *Working of cloud computing *Characteristics of cloud

1. CLOUD COMPUTING
FOUNDATION
Under the Guidence : Mrs.N.Ruba
Name of the Student : N.Monisha, S.Mahalakshmi,
S.Kiruba
Register Number : CB17S 250394
Subject code : 16SMBECA 2:1
Class : III BCA-”A”
Batch : 2017-2020
Year : 2019 - 2020

2. UNIT-1
CLOUD COMPUTING FOUNDATION

3. CONTENT
UNIT-1
 Introduction to cloud computing
 Move to cloud computing
 Types of cloud
 Working of cloud computing

4. INTRODUCTION TO CLOUD COMPUTING
• Cloud computing was a hazy term, in the sense computing would occur in remote
location without the need of human intervention.
• In the real world, computing developed progressively and can be viewed in two
stages. One is more centralized and the other is desktop.
• The limitations of centralized computing did not give users enough control was
flexible.

5. HISTORY OF CLOUD COMPUTING
• Cloud computing comprises of various phases, which includes
grid and utility computing application service providers and
software as a service(saas).
• The concept of delivering the computing resources through a
universal network was started in the 1960’s, intergalactic
computer network was introduced by J.C.R.Licklider .
• The concept of cloud computing was not new, whereas all the
concepts are really needed for the current trends.

7. IMPORTANCE OF CLOUD
COMPUTING
• Lower IT infrastructure and computer costs for
users.
• Improved performance.
• Fewer maintenance issues.
• Instant software updates.
• Improved compatibility between operating
systems.

8. CHARACTERISTICS OF CLOUD COMUPTING
Dynamic computing infrastructure:
Dynamic infrastructure is needed for cloud computing. The basis of a dynamic
infrastructure is standardized , scalable and secure physical infrastructure.
IT Service- centric Approach:
Cloud computing is service centric business. This is in stark difference to more
conventional system or service centric models.
Self service based usage model:
Interaction with the cloud needs some level of user self service. Best of breed self
service creates the chance to the users to upload, build, deploy, schedule manage
,and report on their business services on-demand basis.

9. MOVE TO CLOUD COMPUTING
Advantages of cloud computing:
• Cost savings
• Strategic edge
• High speed
• Back-up and restore data
• Automatic software integration
• Reliability
• Mobility
• Unlimited storage capacity

10. DISADVANTAGES OF CLOUD COMPUTING
• Performance can vary
• Technical issues
• Security threat in the cloud
• Downtime
• Internet connectivity
• Lower bandwidth

12. KEY CHARACTERISTICS OF CLOUD
 The two keys that enable technologies based upon the
practices in the areas of service provisioning and solution
design , they are
 Virtualization Technique.
 Service-Oriented Architecture.

13. MIGRATION IN TO THE CLOUD
• Security
• Vendor management
• Technical integration
• Process
• Business and view

15. TYPES OF CLOUD COMPUTING
Public cloud:
This computing infrastructure is hosted at the vendor’s
work place , the end user cannot view the Infrastructure.
Private cloud:
This computing infrastructure is dedicated to the customer
and is not shared with any other companies.

16. Hybrid cloud:
Organisations can submit less valued application in public cloud
and high valued applications in the private cloud , the combination
of public and private cloud is called hybrid cloud.
Community cloud:
The cloud infrastructure is shared between the companies of the
same community.

17. CLOUD APPLICATION
INFRASTRUCTURE
• It refers to the hardware and software components such as
servers ,storage, network and virtualization.
• It includes an abstraction layer that virtualizes resources
and logically presents them to users application program
interfaces.
• Cloud infrastructure typically consists of high-density
system with shared power.

18. TRENDS IN COMPUTING
• IT maturity analysis
• Virtualization
• Data growth
• Energy and green IT
• Complex resource training
• Consumerization and social software

19. CLOUD SERVICE MODELS
SAAS
PAAS
IAAS

20. SOFTWARE AS A SERVICE
• It is also known as on-demand software.
• It is a software in which the applications are hosted
by a cloud service provider.
• Users can access these applications with the help
of internet connection and web browser.
• It accessible over the internet.

21. PLATFORM AS A SERVICE
• PaaS cloud computing platform is created for the
Programmer to develop, test, run and manage the
applications.
• Accessible to various users via the same
development application.
• Support multiple language and frameworks.

22. INFRASTRUCTURE AS A SERVICE
• IaaS is also known as hardware as a service .
• It is a computing infrastructure managed over the
internet.
• The main advantage of using IaaS is that it helps users to
avoid the cost of complexity of purchasing and
managing the physical servers.
• Its services are highly scalable.