Different Definitions For Cloud Computing Essay

Lastly, the Infrastructure as a Service is a kind of cloud computing where the provider gives out basic storage and basic computing capabilities through a standardized form. It is meant to work on workloads by pooling together networking equipment, storage systems, servers, Centre space (Williams, 2012). GoGrid, Amazon and 3 Tera are some of the examples of this platform.

Cloud computing was a completely new term a short 9 years ago, in 2007. The basis of this technology is to move the workload of IT activities away from an organization, and to one or more third parties that have resources dedicated to processing such things. These can be, but are not limited to, networking, storage, software systems, and applications. Rather than having to create and maintain their own expensive datacenters, companies can pay a fee to use someone else’s. This makes growing businesses extremely flexible, as they can easily gain or remove storage space per their needs. Being able to purchase the use of online storage space is known as “hardware as a service,” or, more simply, “virtualization.” Being able to purchase the use of online software is known as “software as a service.” Both are very powerful tools that allow the minimization of a company’s IT budget.

Cloud computing offers services to users based on on-demand self-service, broad network access, measured service, resource pooling and rapid elasticity; These characteristics promise a faster time for implementation, lower cost, superior scalability and a better end user satisfaction. These services are delivered in models known as Software As A service (SaaS), Platform As A Service (PAAS), and Infrastructure As A Service (IAAS). The first layer which is the Software As A service (SaaS) is the layer in which software applications are delivered to end users. Below is the Platform As A Service (PAAS) layer which offers a platform on which applications can be developed. The lowest layer is the Infrastructure As A Service (IAAS) layer, in this layer the physical servers and network infrastructure is offered as a service. These services can be deployed throughout the internet (Public Cloud Computing), on the intranet infrastructure, (Private Cloud Computing), in a shared community of private networks (Community Cloud Computing), or a hybrid of both (Hybrid Cloud Computing). The service deployment models are [8]:

Cloud computing is an internet based computing which provides various applications and services like storage, servers, infrastructure, networking with low cost, on-demand self service, pay as you go model, location independent resource pooling, reasonable price , rapid elasticity etc. Cloud computing is one way to increase the capacity add capabilities without investing in new infrastructures like computer hardware involves storage memory, licensing for new software, training for a person and in a dynamic way.

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 is one of those buzzword that can be misleading to people unfamiliar with cloud services. With regular computing, hardware and software is part of the desktop or it is located inside an organization 's network. Cloud computing is means the hardware, storage, and software is provided as a service by another company and accessed over the Internet. The first known reference to what is today called cloud computing was in a Compaq internal document in 1996, but the term did not enter true popularity until Amazon.com introduced the Elastic Compute Cloud. There are different types and delivery models of cloud computing and at the core of Cloud Computing is that a service provider hosts the application which means they will manage software updates, handle costs of servers or development depending on how much the client pays.

The services might include an operating system, a programming language execution environment, databases and web servers (Tsagklis, 2013). Infrastructure as a Service is the most basic cloud-service model, which provides the user with virtual infrastructure, for example servers and data storage space (Tsagklis, 2013). Virtualization plays a major role in this mode, by allowing IaaS-cloud providers to supply resources on-demand extracting them from their large pools installed in data centers (Tsagklis, 2013).

In 1999, Salesforce.com became the first web service to deliver applications and software over the internet. This service eventually led the way to the cloud. In 2006, Amazon unveiled its own cloud computing platform called Amazon Web Services or AWS. The Amazon Web Service now provides online services to other websites and client-side applications and powers hundreds of thousands of startups and larger companies in over 1190 countries worldwide (Fee, 2013). After Web 2.0 was developed in 2009, other companies started their own cloud services. The cloud is used by consumers daily on many different outlets such as: social media applications like Instagram and Pinterest, Google Apps, Apple iCloud, Microsoft OneDrive, and much more. Now, any time you store information without using up your smartphone or your computer’s internal data, you are storing information on the cloud. The National Institute of Standards and Technology (NIST) defines cloud computing as a computing storage system that provides on-demand network access for multiple users and can allocate storage to users to keep up with changes in their needs (Nelson, Phillips, Steuart, 2015). The cloud has three levels: Software as a service (SaaS), Platform as a service (PaaS), and Infrastructure as a service (IaaS). With Software as a service, applications are delivered by the internet. An example of this would be Google Docs, where data is stored in the cloud and files

At a minimum, IaaS public cloud services offer storage and compute services on a pay-per-use model. But the full array of public cloud providers services offered by all major is mind blowing. Virtual private networks, Highly scalable databases, big data analytics, machine learning , developer tools, application monitoring etc. Amazon Web Services was the first IaaS provider, followed by Microsoft Azure, Google Cloud Platform and IBM Cloud.

Infrastructure as a service (IaaS) and platform as a service (PaaS) are two cloud service options that allow you to hang on to your legacy applications. IaaS provides an environment for hosting the application along with infrastructure security. Your business is still responsible for controlling access to the application. With PaaS, the cloud provider patches the operating system and the platform but is not responsible for access management or patching of the application itself.

Infrastructure as a service is another type of cloud service. IaaS “are self-service models for accessing, monitoring, and managing remote data center infrastructures, such as compute (virtualized or bare metal), storage,

Term usage: Cloud computing is an application of utilizing a network of remote servers which is organized on the internet to store, control or manage and process the data, comparatively than a personal computer or a local server.

Our Computing Resources comprise of a range of cloud infrastructure services (IaaS) that deliver virtual platforms or environments for a fraction of the cost. Our services include servers, software, data centre space and network equipment all hosted on the cloud for you to utilise on a 24/7 basis, wherever you are.

This cloud architecture allows the cloud provider to create a computing platform that consist of components such as hardware, servers, routers, storage, and other networking modules. The model follows the pay as you model where each user takes the services offered and pays for what they use or consume. Users can deploy and run any software, which comprise Operation Systems, applications. The cloud provider is responsible for managing the core cloud infrastructure for which users deployed applications or operating environment. Examples of this cloud computing model include Amazon Elastic Compute Cloud (Amazon EC2) which is an Iaas model that facilitates scalable compute volume, on-demand, in the cloud. It actually allows users make use of a plethora of Amazon 's infrastructure with no up-front investments. Amazon EC2 decreases the clock needed to get hold of and boot latest server instances and permit users to immediately scale space – equally up and down as their computing needs vary.