Introduction to Cloud Computing and its Deployment Models

Desklib offers solved assignments and past papers to help students succeed.

Cloud Computing

Introduction
Cloud computing is the technology and
practice to use remote servers network which
are used to store the information regarding any
data and can be processed from there easily
over the internet. It can be available on the
basis of demand. They can be available to an
individual or an organization. Cloud allows the
resource sharing which makes the cost low.

Cloud Computing Concepts
This technology is mainly used for storing the
data and accessing it at the time of need. The
main objective of this technology is that the
client can use cloud computing without having
the deep knowledge in it and also without the
need of any expertise. The concept of cloud is
to minimize the cost of the organization’s
expenses.

Characteristics
The organization’s agility can be improved by
cloud computing.
It claims for reducing the cost.
They are independent of the location and device.
It demands for easy maintenance.
It supports multi-tenancy which allows for
resource sharing.

Deployment models
The four categories of deployment models are:
Private cloud: it is the cloud model which is owned by a
single individual or a single organization.
Public cloud: this is the cloud in which anyone can store the
data and accessing the data is also easy.
Community cloud: it is the model which is shared among the
multiple organizations.
Hybrid cloud: this cloud is the combination of any two cloud
deployment models.

Pros and Cons of public cloud:
Pros:
 Highly scalable
 Flexible
 Independent of place
 Reliable
 Low cost
Cons:
 Security is low
 Customization is poor

Pros and Cons of private cloud
Pros:
It is control-oriented
It is private and secure
Cons:
High restrictions
Cost and pricing is high
Scalability is poor

Pros and Cons of community cloud
Pros:
The cost is low
Resource pooling
It supports multiple organization
Cons:
It is less secure
The community members can only use this cloud

Pros and Cons of Hybrid cloud
Pros:
It is cost effective
It is highly scalable
It is flexible and secure
Cons:
Problems of networking are complex
Organization’s security compliance

Migration to cloud and its benefits
By saving the data on the cloud, the accessing
of data becomes easy and fast. Also, the data
remains secure and the person need not to
carry their systems while travelling for any
purpose. Person just needs the internet to
access file stored on the cloud. The more
benefits are: document control, flexibility,
increased collaboration, etc.

Service models
SAAS: it is software-as-a-service. It is useful as it provides
the software which can be used by the organization over
the internet to build an application.
PAAS: it is platform-as-a-service. The vendors provides the
platform to the organization over the internet to build a
software.
IAAS: it is infrastructure-as-a-service. The vendors
provides the computing resources which are automated
and scalable.

IAAS
It is for infrastructure-as-a-service. This service
is able to provide the resources of computing.
The infrastructure's component are host by the
cloud’s provider. The services which are
provided by this service model are load
balancing, load clustering, detailed billing,
security, monitoring, etc.