Cloud computing is the on-demand availability of computer system resources, especially data storage (cloud storage) and computing power, without direct active management by the user. The term is generally used to describe data centers available to many users over the Internet.

1. Cloud Computing: 1
Introduction to Cloud Computing
Prof Neeraj Bhargava
Vaibhav Khanna
Department of Computer Science
School of Engineering and Systems Sciences
Maharshi Dayanand Saraswati University Ajmer

2. NIST View of Cloud Computing
2
NIST promotes U.S. innovation and industrial competitiveness by advancing
measurement science, standards, and technology in ways that enhance
economic security and improve quality of life

3. 3
• Cloud computing: A model for enabling convenient,
on-demand network access to a shared pool of
configurable computing resources (e.g., networks,
servers, storage, applications, and services) that
can be rapidly provisioned and released with
minimal management effort or service provider
interaction
• This cloud model promotes availability and is
composed of five essential characteristics, three
service models, and four deployment models
Definition by NIST

4. Cloud computing is a model for enabling ubiquitous,
convenient, on-demand network access to a shared
pool of configurable computing resources (e.g.,
networks, servers, storage, applications, and services)
that can be rapidly provisioned and released with
minimal management effort or service provider
interaction. This cloud model promotes availability and
is composed of five essential characteristics, three
service models, and four deployment models.

5. 5
Cloud Computing benefits

6. 6
Five Essential Cloud Characteristics
• On-demand self-service
• Broad network access
• Resource pooling
– Location independence
• Rapid elasticity
• Measured service

7. On-demand self-service
• On-demand self-service. A consumer can
unilaterally provision computing capabilities,
such as server time and network storage, as
needed automatically without requiring human
interaction with each service’s provider.

8. Broad network access.
• Broad network access. Capabilities are
available over the network and accessed
through standard mechanisms that promote use
by heterogeneous thin or thick client platforms
(e.g., mobile phones, laptops, and personal
digital assistants [PDAs]).

9. Resource pooling.
• Resource pooling. The provider’s computing resources are pooled to
serve multiple consumers using a multi-tenant model, with different
physical and virtual resources dynamically assigned and reassigned
according to consumer demand. There is a sense of location
independence in that the customer generally has no control or
knowledge over the exact location of the provided resources but
may be able to specify location at a higher level of abstraction (e.g.,
country, state, or datacenter). Examples of resources include storage,
processing, memory, network bandwidth, and virtual machines.

10. • Rapid elasticity. Capabilities can be rapidly and
elastically provisioned, in some cases
automatically, to quickly scale out and rapidly
released to quickly scale in. To the consumer, the
capabilities available for provisioning often
appear to be unlimited and can be purchased in
any quantity at any time.

11. Measured Service.
• Measured Service. Cloud systems
automatically control and optimize resource
use by leveraging a metering capability3 at
some level of abstraction appropriate to the
type of service (e.g., storage, processing,
bandwidth, and active user accounts).
Resource usage can be monitored, controlled,
and reported, providing transparency for both
the provider and consumer of the utilized
service.

12. Assignment
1.Create a summary note for the NIST definition
and description of cloud computing
2.Explain the essential characteristics of cloud
computing