What is Cloud Computing?


Cloud computing is a topic that many people find confusing. However, it is not as confusing as it sounds. In fact, the most of who claim to not understand the subject are part of the most that they use daily.

Simply put, cloud computing is used to describe different scenarios in which the computing resource is delivered as a service over a network connection (typically the Internet). Cloud computing is therefore a type of computer that relies on sharing a set of physical and / or virtual resources, rather than providing hardware and software locally or personally. It is somewhat synonymous with the term "utility computing" because users are able to access a source to develop resources of computing rather than managing the necessary equipment themselves; In the same way that a consumer is approaching the national supply of electricity rather than running your own generator.

One of the key features of cloud computing is the flexibility it offers and one of the ways in which flexibility is offered through scalability. This refers to the ability of a system to adjust and scale changes in workload. Cloud technology allows the automatic desprovisionamiento provisioning and resources as needed to ensure that the amount of available resources is as close as possible to the current needs. This is a characteristic feature that distinguishes it from other computer models where the resource is delivered into blocks (for example, individual servers, applications downloaded software), typically with fixed capacities and acquisition costs. With cloud computing, the end-user usually only pay for the resources they use, thus avoiding the inefficiencies and costs of unused capacity.

However, the benefits of cloud computing are not limited to flexibility. The company can also benefit (to varying degrees) the scales created by developing services in mass with the same computing environments and the reliability of physical hosting services on multiple servers in which single system failures do not affect the continuity of the Service.

There is also a good option in the level of security and administration required in installations in the cloud, with an option to meet just about any business:

A public cloud, for example, is a cloud that services and infrastructure offsite hosted by a cloud vendor, shared across their customer base, and these customers access via public networks such as the Internet. Public Clouds offer great scale and redundancy, but are more vulnerable than private cloud configurations because of their high accessibility. You can find more information on our "What is a public cloud?".

On the other hand, private clouds with clustered services and infrastructure are stored and managed in a private network, either physically or virtually accessible to a single customer. The obvious advantages for this are higher security and control. The cost advantages are to some extent sacrificed since the company concerned must buy / lease and hold all necessary software and hardware. You can find more information on page "What is a Private Cloud?".

The last option is a hybrid cloud cloud, and as the name suggests, links elements of public and private cloud. A hybrid cloud enables a company to maximize its efficiency; By using the public cloud for non-sensitive operations while a private facility is used for sensitive or business-critical operations, companies can ensure that the configuration of your computer is ideal without paying more than is necessary. You can find more information on page "What is a hybrid cloud?".

The move away from deployment models, altogether, are three models that describe the cloud computing service offered; These include Software as a Service (SaaS), Platform as a Service (PaaS) and Infrastructure-as-a-Service (IaaS).

As with other categories of cloud computing, IaaS refers to the delivery of virtualized IT resources as a service over a network connection. IaaS offers specifically hardware or IT infrastructure as a service provided. The offer includes virtualized server room, storage space, network connections and IP addresses. The resource is extracted from a set extracted from over data centers distributed under the control of the vendor so that the user has access to this resource to build their own platforms IT server
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