Cloud Computing, a computing paradigm is one of the easiest means of accessing and storing data over the Internet, rather than storing data on the computer’s hard drive. It is also recognized as a large group of systems that helps us stay connected to public or private networks and provide a dynamically scalable infrastructure for data, file storage, and applications.
With the launch of this technology, it significantly reduced content storage, delivery, compute cost, and application hosting. It has the potential to transform a data center from a capital intensive configuration to a variable price environment.
According to one of the research industries, Forrester, defines Cloud Computing as a set of highly scalable, abstract, managed computing infrastructure capable of hosting end-customer applications and billed by consumption. Whereas, the US National Institute of Standards and Technology (NIST) has developed the definition of Cloud Computing as a model to allow convenient on-demand network access to a shared pool of configurable computing resources (for example, networks, servers, storage, applications). and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.
The characteristic of Cloud Computing consists of self-service, where a customer can request and manage their own computing resources. A wide network access allows the service to be available to private networks or the Internet. This technology provides a pool of shared resources, where the customer draws from a pool of computing resources, usually in a remote data center.
Cloud Computing service models
Cloud Computing services are grouped into three categories: software as a service (SaaS), platform as a service (PaaS), and infrastructure as a service (IaaS).
Software as a service (SaaS)
In this service model, cloud-based applications are offered to the customer, as an on-demand service. It is a single instance of the service that runs on remote “cloud” computers owned and operated by others and connects to users’ computers via the Internet and typically a web browser. Social networking sites like Facebook, Twitter, Flickr, and Google are all examples of SaaS, although users can access services through any internet-enabled device.
Platform as a service (PaaS)
The platform-as-a-service (PaaS) model is one level above the software-as-a-service configuration and provides hardware, network, and operating system, so that a customer can design their own application and software. To meet application requirements such as scalability and manageability, PaaS providers offer a pre-defined mix of operating system OS and application servers, such as restricted J2EE, LAMP platform (Linux, Apache, MySql, and PHP ), etc. for example, at each stage of the process to develop, test, and ultimately host their websites, web developers can use individual PaaS environments.
Infrastructure as a service (IaaS)
Infrastructure as a Service (IaaS) is a basic computing and storage capacity, which is provided through a standardized service over the network. This model has eased the workload by bundling data center space, storage systems, network equipment, servers, and more. together and make them available. In addition, the customer can develop and install their own operating systems, software and applications.
Cloud Computing deployment models
To make applications available and deploy, companies can choose Cloud Computing in public, private or hybrid clouds. In determining the correct cloud path for each organization, cloud integrators play a critical role.
In general, the services provided by a public cloud are offered over the Internet and are owned and operated by companies, who use it to provide quick access to reasonable computing resources to other organizations or individuals. Through this deployment model, consumers do not need to purchase supporting infrastructure, hardware, or software, which are owned and managed by vendors.
In this deployment model, the cloud infrastructure is operated solely for a specific organization and is managed by the organization or a third party. While providing greater control of resources and moving away from multi-tenancy, private clouds exist to take advantage of the various efficiencies of the cloud.
This Cloud Computing deployment model merges public and private cloud models. A service provider can fully or partially utilize third-party cloud providers amid hybrid clouds, thereby increasing computing flexibility.
Therefore, for the everyday computer user, this technology offers numerous options, as well as for large and small businesses. And for organizations and individuals, Cloud Computing offers benefits, and the action moves to the interface flanked by multiple groups of consumers and service providers.