Cloud Computing – Wikipedia
Cloud computing is the on-demand delivery of IT resources over the Internet with pay-as-you-go pricing. On-demand self-service: Users can access cloud services without having to engage IT staff. Broad network access: Cloud services are available over the network and accessed through standard mechanisms such as a web browser.
Resource pooling: The provider’s multi-tenant architecture enables sharing of resources and costs across a large pool of users thereby improving utilization and economy of scale. Rapid elasticity or expansion: Capabilities can be rapidly and elastically provisioned, in some cases automatically, to quickly scale out. Measured service: Cloud systems automatically control and optimize resource use by leveraging a metering capability at appropriate granularity level (e.g., storage, processing, bandwidth, and active user accounts).
How Does Cloud Computing Work
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). This paper provides an overview of the cloud computing paradigm and discusses the economic aspects of cloud computing. We also survey recent research in this area.
Characteristics of Cloud Computing
Most people have heard of cloud computing, but few know what it actually is. Cloud computing is the delivery of computing services—including servers, storage, databases, networking, software, analytics, and intelligence—over the Internet (“the cloud”) to offer faster innovation, flexible resources, and economies of scale. The National Institute of Standards and Technology (NIST) defines cloud computing as “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.”
In other words: Cloud computing is the ability to access technology resources—including information and applications—on demand without having to build or manage the underlying infrastructure yourself. With cloud computing you can: Access your data and applications from any device with an Internet connection
Scale up or down as needed without having to make large upfront investments in new infrastructure
Cloud Computing Basics
Cloud computing is a type of internet-based computing that provides shared computer processing resources and data to computers and other devices on demand. It 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). This cloud model promotes availability and is composed of five essential characteristics:, pay-as-you-go pricing,, broad network access,, resource pooling,, rapid elasticity.
The National Institute of Standards and Technology’s (NIST) definition of cloud computing identifies three service models:, Infrastructure as a Service (IaaS), Platform as a Service (PaaS),and Software as a Service (SaaS). These models offer different levels of abstraction and control over the underlying infrastructure which can be broadly classified into two deployment models: private and public clouds. In addition to these deployment models, hybrid clouds are also becoming popular since they allow an organization to extend their existing IT infrastructure by using both private and public clouds.
Now that we have looked at the basics of cloud computing let us take a more detailed look at each one of the key components that make up this emerging technology.
The cloud is a network of servers that allows users to store and access data over the internet. Cloud computing is a type of computing that relies on sharing resources over the internet. The main benefit of cloud computing is that it can provide scalability and flexibility for businesses.