Cloud Computing Security and Challenges

The provided assignment is related to cloud computing, specifically addressing the problems and challenges that come with this technology. It highlights the importance of system updates and encryption algorithms in securing data, as well as the lack of awareness among users regarding where their data is being stored and the level of security involved. The assignment draws from various sources, including research papers and articles, to provide a comprehensive understanding of the issues surrounding cloud computing.

Running head: CLOUD COMPUTING
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Name of the Student
Name of the University
Author Note

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Table of Contents
Question 1..................................................................................................................................3
Question 2..................................................................................................................................7
Office automation approach...................................................................................................7
Benefit and Issues of each Approach.....................................................................................8
Recommendation of the Approach.........................................................................................9
Question 3................................................................................................................................10
Difference between IaaS and PaaS in public cloud.............................................................10
Usage of the model...............................................................................................................11
Question 4................................................................................................................................12
Difference between SaaS, PaaS and IaaS............................................................................12
Recommendation of the model............................................................................................13
Problem relating to the model proposed (SaaS)...................................................................14
Dealing with the issue..........................................................................................................14
References................................................................................................................................15

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Question 1
Slide 1
Slide 2
Slide 3

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Slide 4
Slide 5

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Slide 6
Slide 7

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Slide 8
Slide 9

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Slide 10
Question 2
Office automation approach
Office automation in recent times can be considered as one of the vital aspect, which
could be implemented which would be helping to acheive greater standard of working in the

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office. Two of the approach, which can be used in order to achieve the aspect of home
automation, are the single point database access of the database and individual log in for the
different employees.
Single point database access: The concept of the single database access can be considered as
one of the important aspect whose implementation can be very much beneficial for any
office. It can be considered as a single point were all the information and the critical data of
the organization are stored and can be accessed when needed. The employee in this context
do not need to look for the data at different locations, as it would be available to them at a
single point or place. The concept would be directly reducing the amount of work and the
work would be less hectic.
Portal approach: This can be considered as one of the latest approach where every employee
would be given a password by which they can access the organization’s data. Without the
password, the data would not be available to the employee. This concept can be very much
beneficial in a way that any unauthorized person trying to access the data would not be
allowed to do so and get the information from other systems. The security aspect can be very
much included into the working of the office by means of implementing the portal approach.
Benefit and Issues of each Approach
Single point database access
Benefit
The main benefit, which can be achieved from the concept, is that the time, which
would be involved, in the processing of the data would be reduced and the work would be
very much easy. The security aspect can also be increased in this aspect due to the factor that
there would not be any other security measures than a centralized security system, which
would be safeguarding the database.

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Issue
The main issue, which can be seen in this if there is any sort of security, breach that
the overall system would be shut down and the overall working of the office would be at a
halt. There are no other option but to provide the best security measure, which directly
secures the system and if any breach occur, it could be minimized.
Portal approach
Benefit
The approach can be beneficial in a way that each of the employee would be given a
separate password, which would be known to them only. This aspect would be securing the
individual information of the user, as only authorized user would be given the permission to
access the data. The portal approach can also be beneficial in a way that it would lessen the
burden relating to other office work such as attendance of the employee, the hours of working
in the office and the amount of work a particular individual is involved.
Issue
The main issue with the portal approach is that the without the username and the
password the portal cannot be accessed and there is no other secondary option available in
this context. It can be considered as a single entry point of every user. It should be always be
taken into consideration that the employee should keep the password in their own possession
due to the factor that if any working or misuse is done through their portal they would be
convicted and asked questions about the reason of doing such type of activity.
Recommendation of the Approach
Taking into consideration the Approaches, which are stated above the most beneficial,
would be the use of the single point centralized database system. This type of approach is
recommended due to the factor that it would not alter the predefined structure of the working

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of the organization and would implement the new system over the concept of the older
system. The approach would be making the older system more advanced with advanced
features involved into the concept.
Question 3
Difference between IaaS and PaaS in public cloud
The infrastructure as a service can be considered as a model, which uses the concept
of virtual machine rather than the traditional aspect of physical server, which takes tons of
energy and space. The concept of infrastructure as a service is a server, which is owned by
someone else, but it allows other users to use them for which the user have to pay. Most of
the organization move towards the concept of infrastructure as a service and use the service
of a public cloud or can use private section of the cloud for which they have to pay more than
the amount of the shared cloud domain (Oliveira, Thomas & Espadanal, 2014).
The Platform as a service can be referred to as a platform, which can be used by the
organization. The platform can be used for developing software. In this context, it can be
stated that the Platform as a service model does not require any time of download of software
and has everything pre-installed into its aspect. The model is beneficial in the concept of the
developers due to the factor that it does not only allow the development of the software but
also allows the concept of testing, iterate their own software and build the application.
The main difference between the IaaS and PaaS can be explained with the help of the
following diagram.

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Figure 1: (Difference between IaaS and PaaS)
(Source: Oliveira, Thomas & Espadanal, 2014).
Usage of the model
IaaS
The infrastructure as a Service model can be implemented by an organization when
the underlying hardware or the software is needed to be customized or have a specific need
regarding the security of the private cloud or the isolated database. An individual can find all
the points in this context ranging from the private cloud concept to public cloud even within
the modules, which support the blur line between the IaaS and the PaaS.
PaaS
The Platform as a Service model can be used by organization when the need relating
to time and resources to build an application but the organization do not want to involve
themselves into the aspect of building servers, database, networking and managing them

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altogether. The concept of the platform as a service would be directly storing the information
along the side of the user. The features of the encryption and containerization would be
keeping the data separated and secured.
The choice relating to the decision of the organization into which model to be used
should be taken into consideration by plotting down the resources which are internal and the
environment of deployment which is regulatory. The organization trying adopting the SaaS
model are those, which need more focus on the concept of development, but they actually
lack the resources to implement them. Most of the organization implements software
according to the environment of their working. In recent times the overall working of the
organization and the basic need behind the need of the organization are taken into
consideration before actual decision is taken into which model would be directly beneficial
for the organization and would enhances the working of the organization.
Question 4
Difference between SaaS, PaaS and IaaS
SaaS
The software as a service is a model, which provides to the user highest level of
abstraction. It directly provides the facility of using and connecting to the application that are
based on the concept of the cloud and available over the concept of the internet. In the
concept the Software as a service there are third party applications which can add to the
advantage which can be gained from it, for example software deployment and management of
tasks (Biswas & Giaffreda, 2014).
PaaS

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The platform as a service operates at much lower level of abstraction as compared to
the Software as a service prospective. The platform as a service provides a software
development platform where the developers can develop their software has and directly
launch them on top of it. The advantage that can be achieved relating to the concept are that
ones the software is developed using this platform the features of the cloud like the multi
tenancy, scalability and the availability are automatically involved into the software.
IaaS
The infrastructure as a service model can be considered to be one of the most agile
models of cloud computing. The concept directly enables deployment, which is automated
relating to the aspect of compute, storage, networking and other services (Kaur & Rai, 2014).
The user can easily build a virtual data center with all the different types of resources
included into the system. The user in this context can access the data center of other user and
is not restricted to their own data center only. The service of the infrastructure as a service
mainly include amazon web service (AWS), exoscale, Google cloud.
Recommendation of the model
The model, which is recommended in this context foe the SharedPoint service, is the
SaaS (Software as a service) model. The advantage that is obtained after the implementation
of the model are as follows:
 The model is very much less in cost relating to the implementation.
 The user do not have to install and other types of software and the model can be
considered a model, which is ready to use model.
 The time aspect in this context for achieving benefit from the concept can be reduced
highly (Mezgár & Rauschecker, 2014).

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Problem relating to the model proposed (SaaS)
The main problem, which is seen in the model, is the concept of the security of the
data. In most of the cases it is seen that the user are very much unaware of were the data is
being actually stored; the level of security which is involved into the concept and the degree
of responsiveness the server would be having when the need of the data would be requested.
In most of the cases, the user is unaware of the security of the data, which is stored in the
concept of the cloud.
Dealing with the issue.
The main consideration, which should be taken into consideration the system, should
be updated frequently so that there are no fault in the system. In the concept of securing the
data encryption algorithm are added into the concept, which makes the data more secured and
very easy to deal with (Rosado & Bernardino, 2014).

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References
Avram, M. G. (2014). Advantages and challenges of adopting cloud computing from an
enterprise perspective. Procedia Technology, 12, 529-534.
Biswas, A. R., & Giaffreda, R. (2014, March). IoT and cloud convergence: Opportunities and
challenges. In Internet of Things (WF-IoT), 2014 IEEE World Forum on (pp. 375-
376). IEEE.
Hameed, A., Khoshkbarforoushha, A., Ranjan, R., Jayaraman, P. P., Kolodziej, J., Balaji,
P., ... & Khan, S. U. (2016). A survey and taxonomy on energy efficient resource
allocation techniques for cloud computing systems. Computing, 98(7), 751-774.
Kaur, K., & Rai, A. K. (2014). A comparative analysis: Grid, cluster and cloud computing.
International Journal of Advanced Research in Computer and Communication
Engineering, 3(3), 5730-5734.
Kaur, R., & Kinger, S. (2014). Analysis of job scheduling algorithms in cloud computing.
International Journal of Computer Trends and Technology (IJCTT), 9(7), 379-386.
Lo’ai, A. T., Mehmood, R., Benkhlifa, E., & Song, H. (2016). Mobile cloud computing
model and big data analysis for healthcare applications. IEEE Access, 4, 6171-6180.
Mezgár, I., & Rauschecker, U. (2014). The challenge of networked enterprises for cloud
computing interoperability. Computers in Industry, 65(4), 657-674.
Oliveira, T., Thomas, M., & Espadanal, M. (2014). Assessing the determinants of cloud
computing adoption: An analysis of the manufacturing and services sectors.
Information & Management, 51(5), 497-510.

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Puthal, D., Sahoo, B. P. S., Mishra, S., & Swain, S. (2015, January). Cloud computing
features, issues, and challenges: a big picture. In Computational Intelligence and
Networks (CINE), 2015 International Conference on (pp. 116-123). IEEE.
Rosado, T., & Bernardino, J. (2014, July). An overview of openstack architecture. In
Proceedings of the 18th International Database Engineering & Applications
Symposium (pp. 366-367). ACM.
Sadiku, M. N., Musa, S. M., & Momoh, O. D. (2014). Cloud computing: opportunities and
challenges. IEEE potentials, 33(1), 34-36.
Wang, B., Zheng, Y., Lou, W., & Hou, Y. T. (2015). DDoS attack protection in the era of
cloud computing and software-defined networking. Computer Networks, 81, 308-319.