Elasticity of Cloud Computing and Examples of EC2

Running head: CLOUD COMPUTING
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Introduction
The main aim of the report is to describe the elasticity of cloud and the examples of EC2 and its working.
Elasticity is mainly considered as the ability to stretch a system as well as expanding the tolerances of it. In the
computing of cloud, elasticity can be defined as the degree of adapting the changes of workload of a system by
resource provisioning in a manner which will be autonomic [1]. Elasticity is such a characteristic which mostly
differentiates the computing of cloud from the paradigms of computing which was proposed earlier like the
computing of grid. The dynamic capacity adaption by the alteration of the utilization of the resources of computing
for meeting a workload which is varying is called elastic computing. Cloud computing is mainly determined with
the capability of handling a number of processes and scaled as per the desired operation. Leakage of any data can be
a huge advantage for all the hackers as the elasticity enables information processing which will be both stable as
well as secure within the cloud. This is seen to be very critical in several functions of shopping businesses which are
perceived to be digitized a lot more than before. There is a massive challenge of maintaining both elasticities as well
as security due to the processing of more and more information [3]. If the flexibility is broken, that means that the
material is cracked and there is a fulfillment of weaknesses. The elastic limit of the cloud allows the hackers in
gaining access to medical, business or some other sensitive information with the help of which they can utilize for
their purpose[2]. It is observed that security is a major issue but also the experience of the user when it comes to the
elasticity of the cloud.
Discussion
The elasticity of the cloud is responsible for managing the load of work along with several processes as
well as procedures of security [4]. Elasticity helps in handling a large network of information and has the ability to
scale up and managing high traffic volumes. It has the capability of scaling down and using less number of resources
when required [5]. Apart from the benefits of scaling up for handling traffic bursts or scaling down, it is very much
crucial for knowing about the concept of elasticity. While opting for a provider of cloud, it is essential for
considering if they have the service of flexibility. Elasticity belongs to the core if several products of AWS.
Amazon Elastic Compute Cloud or Amazon EC2 helps in providing a scalable capacity of computing in the
cloud of Amazon Web Service. Utilizing Amazon EC2 removes the requirement for investing in the upfront of
hardware, and this helps in further development as well as the faster deployment of applications [6]. With the help of

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EC2, many virtual servers can be launched, security can be configured and storage can be managed. It also enables
scaling up or down for handling the changes in the needs and the reduction of the requirement for forecasting traffic.
There is a list of practices which helps in getting excessive benefits from Amazon EC2. It includes the
working related to storage, security and network, management of resource, recovery, and backup. In the case of
maintaining security, access to the resources of AWS and APIs using the federation of identity is managed [7]. All
the credential policies of management as well as the process for the creation, rotation, and distribution are
established. The least permissive rules can be implemented for the group of security. The operating system is needed
to be regularly patched, updated and secured. In case of storage, there is a need for understanding the root device
type’s implications for the persistence of data, backup as well as recovery. Separate volumes of Amazon EBS are
used for the operating system versus the amount of data. The available instance store can be used for storing
temporary data. In the case of the management of the resource, instance metadata is , and the resources of AWS are
needed to be identified. The new limits of Amazon EC2 are to be viewed. In case of keeping a backup and recovery,
there is a need for maintaining a regular backup of the volumes of EBS with the use of the snapshots of Amazon
EBS. Applications are needed to be designed for handling the dynamic addressing of IP.
Elasticity mostly aims at matching the resource amount which is allocated to a service with the amount of
resource which it requires actually by avoiding over-provisioning or under-provisioning [8]. Over-provisioning is
the allocation of much more resources than which is needed must be avoided because the provider of service has to
pay for all the resources which are allocated to the service. In this case, the expense of the service provider is much
higher than the optimal one, and there is a reduction in profit [9]. On the other hand, under-provisioning is the
process of allocating few resources than needed, should be avoided. If it is not prevented, then the service is not able
to serve the users of it with excellent service.
Amazon Elastic Compute Cloud (Amazon EC2) is a service of the web which helps in providing a resizable
capacity of computing in servers in the data centers of Amazon which are used for building as well as hosting
systems of software [10]. For using EC2, a developer needs to create an AMI or Amazon Machine Image containing
an operating system, settings of configuration and several programs of application. Then the AMI is uploaded to the
Amazon Simple Storage or Amazon S3 and then finally gets registered with Amazon EC2, thus creating an