Cloud Computing: Models, Services, Misconceptions and Examples

Running head: CLOUD COMPUTING
Cloud Computing
Name of the Student
Name of the University
Author’s Note:

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CLOUD COMPUTING
Table of Contents
Part 1: Introduction....................................................................................................................2
Part 2: Cloud Computing Model................................................................................................3
Cloud Services by Oracle Cloud............................................................................................6
Cloud Services by Nectar Cloud............................................................................................7
Part 3: Misconceptions on Cloud Computing............................................................................7
Part 4: Conclusion......................................................................................................................9
References................................................................................................................................11

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CLOUD COMPUTING
Part 1: Introduction
Cloud computing can be defined as the paradigm of information technology, which
helps to enable the ubiquitous accessing to all types of system resources that are configurable
on the Internet (Dinh et al. 2013). Moreover, the services that are of higher level could be
easily and frequently provisioned with minimum managerial effort. Cloud computing solely
relies on the sharing of various resources for properly achieving the economies of scale and
coherence. The third party clouds enable all the companies for focusing on the core
businesses and not spending resources on the computer maintenance and infrastructure
(Arora, Parashar and Transforming 2013). Cloud computing helps the organizations to reduce
the costs related to IT infrastructure. It is completely different from the traditional IT
servicing. The main difference is that cloud computing is extremely elastic and resilient,
whereas both of these advantages are absent in traditional IT systems. The second important
difference is that cloud is flexible as well as scalable; however, no such feature is present in
traditional IT systems (Fernando, Loke and Rahayu 2013). The other differences include cost
effectiveness, high security and office automation; all these features are not available in
traditional IT systems.
The following report outlines a brief discussion regarding the entire concept of cloud
computing. This report clearly depicts the description on the various cloud service models
viz. Infrastructure as a Service or IaaS, Platform as a Service or PaaS and Software as a
Service or SaaS. The two important issues related to Nectar Cloud and Oracle Cloud is also
provided here. The misconceptions related to cloud computing are also solved here. The final
part of the assignment concludes with a description on the several benefits and challenges of
cloud computing.

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CLOUD COMPUTING
Part 2: Cloud Computing Model
Cloud computing mainly comprises of three distinct service oriented architecture
models. They are as follows:
i) Infrastructure as a Service or IaaS: Infrastructure as a Service or IaaS mainly
refers to any type of online service, which gives the higher level APIs that are, utilized to
deference several lower level details of the infrastructure of underlying network (Garg,
Versteeg and Buyya 2013). These details mainly include the location, data security, physical
computing resources, data backup, data scaling, data partitioning and many more. It is a
virtualized infrastructure that helps all of its users for executing any type of operation on that
infrastructure. The hypervisors like the Oracle VM, VMware ESX and Oracle VirtualBox run
this virtual machine as guest. Infrastructure as a Service can also be defined as the capability
given to a client for provisioning processing, networks, storage and all other significant
computing resources (Rittinghouse and Ransome 2016). Here the client could easily deploy
as well as run any arbitrary software that could involve all applications and operating
systems. The providers of the IaaS cloud properly supply all the resources on the demand
from the larger equipment pools that are installed in the data centres. In the wide area
connectivity, the clients of cloud computing can either utilize the Internet connection or the
carrier clouds that are the dedicated VPNS or virtual private networks. For the successful
deployment of these applications, the clients of cloud install images of operating system and
the application software over the infrastructure of cloud. Within the cloud service model of
infrastructure as a service, the client of cloud patches as well as maintains the application
software and the operating systems (Hashizume et al. 2013). The main advantages of the
infrastructure as a service or IaaS include flexibility, scalability, high security and easy
maintenance. The only important disadvantage of this particular model is that it is extremely
expensive and thus all organizations or enterprises could not afford this virtualized