1.9.2 Deployment Models:. Different Deployment Models Are

As previously mentioned, cloud computing has recently emerged as a pioneering model for hosting and distributing services over the Internet. Actually, the model entails sharing resources on a huge scale through a value effective and location independent process. While the resources on the cloud are deployed by the seller, they are utilized by the consumer (Belamkar, 2014). Cloud computing is very beneficial to organizations and companies because it is engaging to business organizations

Especially in the public cloud and other deployment models user can choose the different models but the privacy and accountability in the public cloud are not related to cloud service provider and it is causing problems to the organizations.

Cloud provider is organizations that provide cloud-based IT resources. Thus, we can think the cloud provider is the organizations of business and company that take responsibility to create cloud services available to demand of cloud computing technology in the market. In addition, they are providing cloud-computing services are the minimum level of services that a provider will provide to client per the agreement, as known SLA. Therefore, cloud computing services require management and administrative duties to look after the overall of cloud computing infrastructure service to make sure the cloud computing services is going smoothly. Apparently, cloud computing provider owns the cloud base or IT resources of cloud computing. Then, the company is divided potential of cloud base in order to provide the lease for commercial. Nevertheless, there are some companies of cloud providers also “resell” IT resources, which rent from other cloud providers (Rouse, 2011, n.p.g.; Horvath, 2015, n.p.g.)

As we learned in previous weeks, cloud computing services have three major different cloud architectures for different demanding customers. The three different architectures are Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS). For the words of the name, we can see the obvious differences among these three architectures, which they provide different cloud services based on their specific cloud architectures. What are the differences among these three cloud services? What are the responsibilities for the cloud services providers? What are the responsibilities for the customers? The following will discuss about these questions.

Business owners use three types of cloud service, public, private, and hybrid these clouds store their data and provide them with services. The benefits of these clouds are endless, additionally, they saves businesses time and money, promoting innovation, enhancing productivity, and improving communication while cloud hosting accelerate information sharing, like email, application hosting, web-based phone, and data storage (Griffith, 2013).

Public Cloud - The cloud infrastructure is made available to the general public or a large industry group and is owned by an organization selling cloud services.

The issue of cloud computing refers to either the applications that are delivered in the form of services on the internet or the systems software and hardware in the data centres that are meant for the provision of those services (Dinh, et al. 2013). As outlined by NIST, there are usually four main cloud delivery models. The cloud models are

Cloud computing can also be separated into three broad categories of service: software as a service (SaaS), platform as a service (PaaS), and infrastructure as a service (IaaS). SaaS are applications that are typically run on remote computers that are owned and operated by a third-party; they connect to customers computers via the Internet. Examples would be, accounting software such as QuickBook on the enterprise side and services like Facebook or Google on the consumer side. The second category, PaaS is a platform for developers to design and build their own applications rather than use existing ones. These applications could range from a web site to a custom operating system. An example of a PaaS provider is Windows Azure Cloud Services. The third and final type of cloud offering is IaaS. IaaS is the actual nuts and bolts of computing hardware in virtual form. An IaaS provider such as Amazon Web Services (AWS) can offer their customers access to server farms that otherwise would be beyond their capability to operate.(Juve et al, 2013) Cloud computing, as it has come to be understood, is more than simply storing data remotely. It is instead, the idea of the technology itself

Cloud solution provides shared resources on demand, which is highly configured and computed, with minimized management efforts required. With the emergent of cloud services, individual users and enterprises with various capabilities would able to manage their data either locally or remotely, with servers located somewhere else, or they pay to have cloud providers manage the data.

Furthermore, different deployment models exist, we are going to focus only on the two different poles, the private cloud and the public cloud. The former means that the cloud infrastructure is owned and operated by a single and usually the same organization, while the latter stands for a public infrastructure where basically everyone can use it under different conditions. And this is the “cloud” we will be referring to in this essay.

According to Prasad, Gyani and Murti (2012), “Cloud computing can be defined as a new style of computing in which dynamically scalable and often virtualized resources are provided as a service over the Internet” (p.7). This statement is from five years ago, and although cloud computing is no longer considered new, this definition still describes what cloud computing means today. Cloud computing being private or public is becoming more primordial in the IT sector due to the numerous advantages it gives to its end users (Basmadjian et al. 2012). Since the interest in cloud computing keeps on increasing, efforts need to continue to evaluate current trends in security and privacy. Cloud computing

Widespread usage of could computing is made possible via the internet. It is the most common way to have access to cloud computing resources. However, there are many people who are not familiar with terminology and concepts. Therefore, they often need to be clarified. The news media representation of cloud computing can be vague or it might not be necessarily fully captured the extend of what cloud computing entails or represents. Cloud users are not familiar with characteristics, models, and services. Therefore, this following section of the research paper introduces layers and types of clouds, exploring the characteristics, service models, and deployment models in use today (“Cloud Computing for Business”, n.d.).

Public clouds are multi-tenant architecture and has pay as you go system. Some of the top vendors are Microsoft Azure, AWS etc. In this kind of model, a third party provider makes resources to public through the internet. The users do not have to set up or maintain their own cloud servers in the house. The hybrid model has the capacity of cloud bursting and has benefits of both the private and public models. This model has both the private cloud and third party public cloud services. Rouse, M. (2017, July). Though there are these kinds of model, the users tend to choose multi-cloud model. This is utilization of two or more clouds. The benefit of this kind of was of operating is that they can easily migrate between the clouds and minimize the risk of service outage. According to a survey around 61 % of users use multi cloud models.

A cloud service has three distinct characteristics that differentiate it from traditional hosting. It is sold on demand, it is scalable and the service is fully managed by the provider. Significant innovations in virtualization and distributed computing, as well as improved access to high-speed Internet and

Cloud computing is a web based utility model. The user does not need to maintain any infrastructure that is to be managed by the provider that is cloud provider. The cloud provides different solutions for the software, platform oriented and the infrastructure. There are three types of services offered which are classified as (IaaS) Infrastructure as a Service, Platform as a service (PaaS) and Software as a Service (SaaS). These services can be deployed by its cloud models that can be private, public, hybrid and community model.