Cloud Computing: Models, Misconceptions and Services by Oracle and Nectar Cloud

Assignment-1
Course name: Enterprise Computing Architecture (Term 1-2018)
Course code: COIT20259
Lecturer: Naveed Ali
Tutor: Naveed Ali
Due Date: Friday of week-5 (6/04/2018)
Prepared By-
Name: Jay Atulbhai Mehta
Student Id: 12045043

Table of Contents
Part 1: Introduction 3
Part 2: Cloud Computing Model 4
Cloud Services by Oracle Cloud: 7
Cloud Services by Nectar Cloud: 7
Part 3: Misconceptions on Cloud Computing: 8
Part 4: Conclusion 10
References 12

Part 1: Introduction
1. Cloud Computing:-
Cloud computing can be defined as the paradigm of information technology, which helps to
enable 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.
2. Difference between cloud computing and traditional IT servicing:-
Cloud computing is completely different from the traditional IT servicing. The main
difference is that cloud computing is extremely elastic and resilient, whereas both 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. The other
differences include cost effectiveness, high security and office automation; all these features
are not available in traditional IT systems.
3. Report structure:-
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.
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 in

report. The misconceptions related to cloud computing are discussed here. The final part of
the assignment concludes with a description on the several benefits and challenges of cloud
computing.
Part 2: Cloud Computing Model
Cloud computing mainly comprises of three distinct service-oriented architecture models.
They are as follows:
1. 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.
Iaas is a virtualized infrastructure that helps all 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