Cloud Network Management:Cloud Computing

The concept of Cloud computing, which was a term introduced in 2007 has been around since the 1960's when John McCarthy wrote "computation may someday be organized as a public utility." With Saas (Software as a service) becoming more and more popular, companies.The services can be public or private depending on the user's preference. Private clouds are proprietary networks or data centers that are managed by the organization it serves. In addition, there is also a cloud computing Hybrid service, which is maintained by the organization and external providers.

Software as a service has been reported to cut cost thus, allowing companies to invest money elsewhere within. Along with reducing technical cost, the cloud also allows users to access the network from virtually anywhere with any Internet ready device like a desktop, laptop, smartphone, or tablet increasing productivity.

Many companies are starting to look at cloud computing as a necessity. For instance, IT departments can focus on other issues, without concerning themselves with constant server updates or software upgrades. Also, organizations can store more data than before avoiding the cost of buying more storage devices. Lastly, another advantage of software as a service is the pay as you go model. This enables companies to increase resources only when needed. If more resources are needed, it is as simple as calling your service provider and upgrading the account.
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Cloud Computing

Cloud computing - we hear the term almost daily. But really, just what is cloud computing all about? First of all, it's useful to understand where the term came from. It most likely originated from the use of a cloud image to represent a networked computing environment or the internet.

A quick Google search will reveal a number of definitions for cloud computing. I like a definition I picked up from Wikipedia which defines cloud computing as the delivery of computing as a service rather than a product whereby shared resources, software and information are provided to computers and other devices as utility similar to the electricity grid over a network which is most often the internet. To sort out some of the confusion around cloud computing, it is helpful to understand the various service models, of which there are three - software as a service (SaaS), platform as a service (PaaS) and infrastructure as a service (IaaS).

SaaS is the most widely known flavour of cloud service. SaaS is sometimes referred to as on demand software. With SaaS, software and its associated data are centrally hosted and are typically accessed over the internet using a browser. What are some examples of SaaS? Mailchimp, the application we use to distribute our newsletters, is an example. Zoho CRM is another example of SaaS. Gmail is another example and the list continues to expand.

PaaS provides the delivery of a computing platform and required solutions to facilitate the deployment of applications without having to invest in the cost and complexity of hardware and software. Some examples of PaaS include Microsoft Azure and Google's App Engine.

The IaaS service model allows clients to avoid the procurement of servers, software, data centre space and network equipment. Such resources are provided as a fully outsourced service. Examples of IaaS include Amazon's Elastic Compute Cloud, IBM and Rackspace.

In addition to the various cloud service models, it's useful to understand the delivery models through which cloud computing is distributed. The main delivery models include public, private, community and hybrid.

A public cloud offers infrastructure and solutions to the general public and is typically owned by a large organization that sells cloud services.



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