Essay on Cloud Computing

Cloud Computing is a fairly new term used to identify a type of computer connectivity, IT services and on-demand delivery offered via the web. The way that it works is, Cloud Computing offers an easy approach to accessing servers, storage, databases and a wide set of request over the Internet. Cloud Computing also allows cloud-based service providers to own and sustain the network-connected equipment necessary for these application services. This is all done while permitting a business to facilitate and use the services that are deemed essential via a web application (Amazon, 2016).

The acknowledged meaning of Cloud Computing originates from the National Institute of Standards and Technology (NIST). The NIST definition rushes to a few hundred words yet basically says that; Cloud computing is a model for empowering advantageous, on-interest system access to a common pool of configurable registering assets that can be quickly provisioned and discharged with insignificant administration exertion or management supplier cooperation. What this implies in plain terms is the capacity for end clients to use parts of mass assets and that these assets can be obtained rapidly and effectively. NIST likewise presents a few qualities

There are three standard service models: Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS). IaaS is when the cloud

An example of an organization with a SaaS business model would be Facebook or LinkedIn; each offer access to software as a web-based interface. Platform as a Service is a computing platform being utilized as a service, which means that the platform is outsourced instead of an organization handling their own software or hardware features. An example of a PaaS business would be Windows Azure or Google App Engine, where applications or software can be created and distributed via one website. Infrastructure as a Service is where an organization completely outsources the management of their servers for data holding and is usually just billed for their usage. An example of a IaaS business would be RackSpace or GoGrid who concentrates primarily on storing the data on their services, allowing the cost efficient Cloud services that we enjoy.

Cloud computing is quickly evolving and expanding, thus it’s hard to precisely define this technology (Pallis 2010). However, the main features of cloud computing can be identified according to national institute of standards and technology (NIST)’s definition:

The National Institute of Standards and Technology defines cloud computing as a model that allows convenient, on-demand network access to a pool of configurable computing resources. These resources may consist of storage, networks, servers, applications, services and so forth that can be quickly provisioned and put into service while requiring a minimum of management effort or interaction by the service provider (Mell & Grance, 2011).

Cloud computing has been defined by NIST as a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or cloud provider interaction. Cloud computing can be considered a new computing paradigm insofar as it allows the utilization of a computing infrastructure at one or more levels of abstraction, as an on-demand service made available over the Internet or other computer network.

Cloud computing is the result of evolution and adoption of existing technologies and prototypes; although the origin of the term cloud computing is unclear. In the earliest stages, the term ‘cloud’ was used to represent the computing space between the provider and the end user. References to cloud computing in its modern sense appeared as early as 1996, with the earliest known mention in a Compaq internal document (Regalado, 2011). In 1997, Professor Ramnath Chellapa of Emory University and the University of South California defined cloud computing as the new “computing paradigm where the boundaries of computing will be determined by economic rationale rather than technical limits alone”. This has become the basis of what we refer to today when we discuss

“Cloud Computing” is a buzzword that the IT industry has been talking about since the past few years. The future of computing is distributed and off-premise where remote servers handle terabytes of data every day. From both technical and social viewpoint, the concept of distributed data centers maintained by “server” companies somewhat dates back to 1990s where grid computing was actively thought upon as an IT requirement. Cloud Computing’s primary aim is provision of IT as-a-service to the cloud users on a utility-based delivery model envisioning greater storage availability, flexibility and scalability of IT systems.

SaaS is the most widely recognized type of distributed computing for independent companies. You can get to web facilitated programming applications utilizing a program, as opposed to conventional applications put away alone PC or server. The product application have is in charge of controlling and keeping up the application, including programming updates and settings. You, as a client, have constrained control over the application and design settings.

Almost all modern day characteristics of cloud computing were thoroughly explored in Douglas Parkhill’s book, “The Challenge of the Computer Utility.” With global availability of high capacity networks, low cost computers and storage devices and the widespread adoption of hardware virtualization, service oriented architecture, autonomic, and utility computing have led to tremendous growth in cloud computing.

Cloud computing enables businesses to deploy or subscribe to services as it needs them. A cloud features self-service, broad network access, centralized shared resources, and measurement of service usage. There are three widely accepted types of cloud service models. They are Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS). Each serves a different purpose and business may choose to use just one, two, or even all three of the cloud types simultaneously as the needed.

According to the definition of the U.S. National Institute of Standards and Technology (NIST, 2011), “Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction”. This cloud model is collected of five essential characteristics, three service models, and four deployment models. Moreover,

The word "cloud" is used to represent the internet and other communications systems. Cloud computing is the result of an evolution of the widespread adoption of virtualization, service-oriented architecture, autonomic, and utility computing in the past, telecommunications companies mainly gave simply dedicated, point-to-point data circuits to their users. Starting from the 1990's, virtual private network services was included in their contributions. It made the telecommunication companies offer equally improved services whereby cutting down on cost as well as using resources effectively.

SaaS applications offer wide range of configuration options and development environments that allows clients to set up their own additions and modifications.