IRJET- A Detailed Study and Analysis of Cloud Computing Usage with Real-Time Applications

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 05 Issue: 12 | Dec 2018 www.irjet.net p-ISSN: 2395-0072
© 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 508
A Detailed Study and Analysis of Cloud Computing usage with Real-
Time Applications
VALARMATHI V1, KOWSALYA N2
1Assistant Professor, Department of Information Technology, Sri Krishna Arts and Science College,
Coimbatore, India
2Student, III Bsc (IT) A, Department of Information Technology, Sri Krishna Arts and Science College,
Coimbatore, India
----------------------------------------------------------------------***---------------------------------------------------------------------
Abstract – Cloud Computing has come of its age since
Amazon uses its first kind of cloud services in 2006. Cloud
computing is an excellent new platformforthedevelopment of
conceptual solution. It is helpful in sharing resources to
achieve economic of scale. It is typically a combination of
hardware and software that works together to deliver many
aspects of the end user .In this paper, we explode the
characteristics of cloud and the three levels of service models
that works effectively on cloud. This paper addresses the main
three types of cloud and in which way they work efficiently on
real time. And it also deals with the advantages and
limitations of cloud computing. This paper discuss about the
major useful technology that we deal in our day-to-day life
with some examples. However, the security and privacy plays
the major role for the users who tries to adapt to the cloud
computing. This paper investigates about the various kinds of
security control.
Key Words: cloud computing, characteristics,
architecture, deployment, limitations, security control.
1. INTRODUCTION
Cloud Computing depends on sharing of resources
to experience coherence and achievement. The unknown
cloud users enable organizations to focus on their core
businesses instead of expending resources on computer
infrastructure and maintenance. Cloud Computing is an
excellent platform for the development of conceptual
solution. Cloud Computing is helpful on sharing ofresources
to achieve economic of scale. Cloud Computing allows the
companies to avoid infrastructure costs. It is the usage of
hardware and software through a network. The cloud is
typically a combination of different types of hardware and
software that works collectively to deliver many aspects of
the end user.
Organization:
The remaining paper is organized as follows: In
Section 2, we define the characteristicsofa cloudcomputing.
In Section 3, we define the architectural component of a
cloud computing which includes Infrastructure as a Service
(IaaS), Software as a Service (SaaS), Platform as a Service
(PaaS). Section 4, explains the deployment model of Cloud
Computing. Section 5, explains the limitations and
advantages followed by some examples in section 6. We
future explain the some security control in section 7,
followed by the conclusion in the section 8.
2. CHARACTERISTICS
Cloud computing delivers the following key
characteristics:
Cloud computing increases the user’s flexibility. The Cost
reductions can be claimed by cloud providers. The Device
and location independence enable users to access systems
using a web browser irrespective of their location or what
device they use (e.g., PC, mobile phone).The Maintenance of
cloud computing applications will be easier. A Multiple
tenant enables sharing of resources and costs across a large
number of users.
It results in:
 Centralization of infrastructure with lower costs
(example: electricity, etc.)
 The peak-load capacity increases (As they need not
to be an engineer and buy the largest equipment).
 Utilization and efficiency improves the systems.
Performance is monitored by IT experts from the
amenity supplier. Productivity may be increased when
multiple users can work on the same data concurrently,
rather than waiting for it to be saved and emailed. Time may
be saved. Reliability and scalability may be improved.
Security has been improved due to thecentralizationofdata.
[2]
Fig -1: Cloud Computing characteristics

3. ARCHITECTURAL COMPONENT
The three most commonly used acronyms in the
cloud computing are: SaaS, PaaS, IaaS. These are
interdependent and it is also called as three tier model.
These three model distinguish between the primary cloud
computing. In other word SaaS, PaaS, IaaS are the main
criteria for cloud computing. The layers of the model are
portrayed in a stack. [4]
Fig -2: Architecture of an service model
3.1 Infrastructure as a Service
Infrastructure as a Service (IaaS) is the lowest level
cloud services and it is the most importantone.Iaasdoes not
include application or even an operating system, whereas
SaaS, PaaS includes application and operating system. Iaas
provide a large number of storage for corporate data
backups, network bandwidth for a company website server.
Sometimes it enables access to high powercomputingwhich
has been previously accessed by the supercomputing. The
most popular IaaS offerings are: Amazon E2C,IBMsoftlayer,
Google’s Compute Engine (GCE). It refers to online services,
which is used to network infrastructure like physical
computing resources, data partitioning, security, etc.Itoften
includes additional resources like virtual machine, server
storage. As it is the lowest layer of abstract model, it must be
transparent to the consumer.
3.2 Platform as a Service
Platform as a Service (PaaS) is the intermediate
layer of the conceptual model. It provides the consumer
operating system, software development platforms,
programming language. This makes it even more simpler to
test, develop and integrate. Some integration and data
managementprovidersgiveussomespecializedapplications
of PaaS which includes iPaaS (Integration Platform as a
Service) and dPaaS (Data Platform as a Service).Application
designers will have an ability to develop and run their
software solutions on a cloud platform without the cost and
complexity. Similarly it reduces the buying and managing of
the hardware and software layers. PaaS offers some
platforms like Microsoft Azure, Oracle Cloud
Platform and Google App Engine.
3.3 Software as a Service
Software as a Service (SaaS) is the outer most layer
of the service model. It represents the set of application that
run in a cloud. It is accessible only through the use of
browser. It can be accessed from anywhere and on any
devices with the internet connection. It does not require the
purchase of software licenses, it reduces cost. The Cloud
provider has an ability to manage the infrastructure and
platforms that run the applications. In the SaaS model, cloud
providers connect and operate application software in the
cloud and the cloud users approach the software from cloud
clients. Cloud computing users do not accomplish the cloud
infrastructure and platform wherethesubmissionruns. This
eradicates the need to connectandruntheapplicationonthe
cloud user's individual computers, which in turn simplifies
maintenance and support. Cloud applications diverge from
other applications in their scalability and readability.
4. DEPLOYMENT
The deployment model has been classified into
many different types. They are private cloud, public cloud,
hybrid cloud. The private cloud infrastructure has been
implemented exclusively for a single organization. The
public cloud infrastructure is an open network forthepublic
users. The hybrid is a combination of bothpublicandprivate
cloud infrastructure. [4]
4.1 Private cloud
Private cloud is a cloud infrastructure functioned
exclusively for a single organization. It is either managed
internally or externally or using a third party host. It is
compressed of files and application, storage and services
that are implemented and protected only within a particular
firewall. The perfect example of private cloud will be a
company that has a Microsoft exchange, this why because
only an authorized user can only be accessed through VPN
connection. In this model, the cloud infrastructure is
privately owned and it has been used completely by the
respective concern that owns it. It results in highest cost of
creating and maintaining the cloud over the use of public
cloud. It has been noted that, it has the largest and the most
detailed control over cloud.

4.2 Public cloud
A cloud is called a "public cloud" when the services
are concentrated over a network that is open for public
usage. Public cloud amenities might be free. But in case of
technical there may be little or no variance between the
public and private cloud architecture. However, security
attention may be significantly different for services like
applications, storage, and other resources. Usually, public
cloud service providers like Amazon Web
Services (AWS), Oracle, Microsoft and Google own and
operate their infrastructure via internet. It also consists of
files and application, storage and services available through
internet. In this model, the cloud appears a stored resource
for the set of organization that has a common interest. The
common interest would tend to security policy and
flexibility.
4.3 Hybrid cloud
Hybrid cloud is a compositionoftwoormoreclouds
which includes private, community or public cloud. Itallows
the user to extend either the capacity or the capability of a
cloud service, by combination, addition or customization
with another cloud service. Diverse usage of hybrid cloud
composition also exists. It is somewhat difficult to
implement as it is the combination oftwoclouds.Itperforms
the critical process and the other performs the secondary
process. Hybrid cloud acceptance depends on a number of
factors such as data security and submission requests, level
of control needed over data, and the applications an
organization uses. [4]
Fig - 3: Deployment model
5. LIMITATIONS AND ADVANTAGES
Cloud computing is much cheaper because of its
economic scale. In cloud computing, the control of the rear
end infrastructure is limited to the cloud merchants only.
The Cloud providers frequently decide the management
policies. Cloud users were limited to the control and
management of their applications, data and services. This
includes data caps, which are placed on cloud users by the
cloud merchants distributing certain amount of bandwidth
for each customer and are often shared among other cloud
users. Privacy and confidentiality were big alarms in some
activities. The cloud computing has been proved to have
some limitations and disadvantages, particularlyforsmaller
business operations. Technical outages are unavoidableand
arise sometimes when cloud service providers become
overwhelmed in the process of serving their clients. This
results in temporary business interruption. Meanwhile this
technology's systems depend on the internet, an individual
cannot be able to access their applications, server or data
from the cloud during an outage. [5]
6. EXAMPLES
The top most real time application where cloud
computing works at its best are:
6.1 Scalable usage:
Cloud computing offers a scalable resourcethrough
different subscription models, whichinturn meansyouhave
to pay only for the computing resources you use.
Example: Netflix
Because of its streaming services, it faces a large
flow in server load at peak time. Since theyhaveuseda cloud
computing that allows the company to significantly expand
the customer without any investment and maintenance of
costly infrastructure.
6.2 Chatbot:
It provides the customized solution, messages and
products based on the behavior and preferences of users.
The extended computing power and capacity of the cloud
enables us to store information about the user.
Example: Google Assistant, Siri
6.3 Communication:
It is the most important and the major requirement
of everyone in day to day life. The cloud also allows us to
enjoy the network based access to the communication tools
like emails and calendar. In fact most of the messaging apps
like Skype, WhatsApp are also a cloud based application in
which we can share information are also stored on the
service provider rather than on the personal devices. It
allows us to access our information from anywhere through
the internet.
Example: WhatsApp, Skype

6.4 Productivity:
This allows us to share our documents through
cloud. In this we can work on our document, presentations,
spreadsheet from anywhere at any time. We need not to be
worried about the data loss, we can retrieve it throughcloud
at any time.
Example: MS OFFICE 365, Google Docs
6.5 Social networking:
Social networks are designed to find people you already
know or you would like to know. If we share information on
social media, we are not only sharing the photos and videos
with our friends and relatives butalsowiththemakersof the
platform. So to manage all these things cloud will be very
helpful.
Example: Facebook, LinkedIn, Twitter
7. SECURITY CONTROL
The well-organized cloud security architecture has
to identify the issues that will rise with security
management. The security management reportstheseissues
with security panels. The security panel is used to safeguard
any flaws in the system and diminishes the effect of an
attack. There are many types of controls behind the cloud
security architecture, they are: [14]
7.1 Deterrent control:
The deterrent control is proposed to reduce the
attacks on a cloud system. It gives a warning sign. The
deterrent control typically decreases the threat level by
informing the potential attackers that there will beopposing
consequences for them if they proceed.
7.2 Preventive control:
Preventive control reinforce the system against
events, generally by reducing if not actually eliminating
vulnerabilities. Strong authentication of cloud users, for
instance, makes it less likely that unapproved users can
access cloud systems, and more likely that cloud users are
positively acknowledged.
7.3 Detective control:
Detective controls are proposed to detect and react
aptly to any incidents that occur. In the event of an attack, a
detective control has to signal the preventativeorcorrective
controls to report an issue. System and network security are
typically employed to detect attacks on cloud systems and it
supports the communications infrastructure.
7.4 Corrective controls:
Corrective controls reduce the costs of an incident
that occurs, usually by limiting the damage. These controls
will work effectively during the incident or after an incident
occurs. We can restore the system backups in the corrective
control.
Fig - 4: Security control
8. CONCLUSION
Cloud computing is recently new technological
development that has the potential to havea greatimpact on
the world. It has many benefits that it provides to it users
and businesses. Users also worry about who can disclose
their data and have ownership of their data. Cloud
computing is changing its own way in IT departments.
Businesses and organization has a wide range ofpathsinthe
cloud, which includes infrastructure, platforms and
applications that are available from cloud providers as
online services. Cloud computing has sets its height in the
field of information and communication technology as it
brings out an evolution.
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