Cloud computing Written assignment

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Assignement about Cloud computing for my English class.

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ENGLISH 3

trial SUMMATIVE ASSESSMENT Ac. year 2015/16

Date 13/02/2016
Student Škarić Mate
Group 4-6
Abstract

Introduction

Body
(methods/results/dis
cussion)

Conclusion

Acknowledgement of
sources/References

Word limit respected
Total

Credits

The topic/problem,
hypothesis being
examined, used
methods, key results,
conclusions form the
results.

/2

The
background/theoretica
l framework (position
the paper in the
existing knowledge)/
importance/limitations
.

/4

Coherence and
soundness of
argument based on a
good understanding of
material, clear focus
on problems set, wide
range of references
and resources.

/6

Restatement of aims,
summary of results,
further work/research,
recommendations/
implications for
practice.

/4

References and in-text
citation are set out in
accordance with
departmental/teacher
guidance on style

/3

/1
/20

ENGLISH 3

trial SUMMATIVE ASSESSMENT Ac. year 2015/16

Mind your spelling. Once you have finished, please upload your work to
Google drive in the folder TRIAL Summative assessment. Do not forget
to rename your file.

Cloud computing
Introduction
Cloud Computing is rising at a fast pace and its data centres are growing at a speed
which is almost unprecedented. But what exactly is Cloud Computing? It can be defined as 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 [1]. Cloud is made up of data centres hardware and software. Those data
centres are maintained and monitored at all times by content providers. Cloud Computing is
known as ‘on-demand computing’ because all data and information are provided to your
computer and you when you need it and when you want it. It refers to both the applications
that are delivered via the Internet and the hardware and software that are located in data
centres that provide those resources and services. Cloud computing offers significant cost
reductions and novel business potential to its users. Some of the advantages of using cloud
computing are accessibility around the world, reduced hardware and maintenance cost and
flexibility and automated processes where customers do not need to worry about concerns
such as software upgrades. In an environment like this, users do not need their own equipment
and infrastructure for various services but can access them from any computer anywhere
around the globe. With such a wide array of advantages, Cloud computing has, in the last
couple of years, grown from being a promising business concept to one of the fast growing
segments of the IT industry [2]. But, as more and more information is placed in the cloud,
concerns are beginning to arise about how safe as an environment a cloud really is. Issues
about the security in cloud computing have played a major role in reducing the speed of its
acceptance.
Body

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trial SUMMATIVE ASSESSMENT Ac. year 2015/16

Cloud computing can be divided based on the services offered and deployment models.
Offered services are Infrastructure as a Service (IaaS), Platform as a service (PaaS), and
Software as a Service (SaaS).
SaaS is a software licensing and delivery model where software is licensed on a
subscription basis and is, therefore, sometimes referred to as ’’on-demand software’’. Users
do not need to install and maintain their software, they simply access it via the Internet,
freeing themselves from software management. Applications are hosted by a vendor or service
provider and made available to users. Some of the benefits of SaaS model are easier
administration, automatic updates and patch management, which are dealt with by the
application provider, compatibility, where all user always have the same version of the
software, and global accessibility. It is most often associated with business software that are
used by enterprise customers at a low cost, when compared to bought software, while
retaining the same benefits of commercially licensed software. Architecture of SaaS based
applications is designed to support many users at the same time.
PaaS provides a platform that allows customers to develop, run, and manage web
application without having to buy, set up, and maintain actual servers.
IaaS is the most basic cloud service model. It provides generic functionality for hosting
and provisioning of access to raw computing infrastructure and its operating middleware
software [3]. It is most often provided by data centres from which users can rent modern
hardware. Multiple users can use available resources at the same time and resources are scaled
up and down depending on the demand from user. Usage of IaaS is most often charged on a
pay-per-use or on a utility computing basis where the cost reflects the amount of resources
distributed and used.
There are three deployment models: private cloud, public cloud, and hybrid cloud.
Cloud infrastructure is operated exclusively within a single organisation and is managed by
that organisation or a third party. It can be located on or off premise of the organisation.
Private cloud is used for several reasons. First, to maximize and optimize the utilization of
existing in-house resources. Second, security concerns including data privacy and trust also
make Private Cloud an option for many firms. Third, data transfer cost from local IT
infrastructure to a Public Cloud is still rather considerable [4]. Last, but not least, is
requirement of organisations to retain full control over their activities that dwell behind their
firewalls. Academics can also build their own private clouds for use in research and teaching.
Public cloud is the dominant form of Cloud computing deployment model. It is used by
general public consumers and full ownership is provided is retained by cloud service

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providers. Service providers keep their policies, value, all profits and charging models, but
also all costs. Popular public cloud services are Amazon EC2, Force.com, and Google
AppEngine.
Hybrid cloud is a combination of private and public infrastructure where those two
remain two separate and unique entities, but are connected together by technology that allows
data and application portability.
In this paper, authors wanted to investigate usage and general opinions about security
among users of public cloud. We were most interested in public cloud because it is most
known and most used among general public. We wanted to determine how many students use
cloud computing both for their personal life. For that purpose, we constructed a survey.
Participants were questioned about their age, personal background, and profession.

-anketa o sigurnosti, bugovima, osjecaju sigurnosti, broju korisnika u raznim okruzenjima

References:
1. Mell, Peter, and Tim Grance. "The NIST definition of cloud computing." (2011).
2. SO, Kuyoro. "Cloud computing security issues and challenges." International Journal
of Computer Networks 3.5 (2011).
3. Prodan, Radu, and Simon Ostermann. "A survey and taxonomy of infrastructure as a
service and web hosting cloud providers." Grid Computing, 2009 10th IEEE/ACM
International Conference on. IEEE, 2009.
4. Dillon, Tharam, Chen Wu, and Elizabeth Chang. "Cloud computing: issues and
challenges." Advanced Information Networking and Applications (AINA), 2010 24th
IEEE International Conference on. Ieee, 2010.
5.

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trial SUMMATIVE ASSESSMENT Ac. year 2015/16

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