An Overview of Cloud Computing

Cloud computing – we hear the time period nearly each day. However actually, simply what’s cloud computing all about? That appears to be a standard query. In June of this 12 months, TELUS and IDC Canada launched a research on cloud computing which surveyed 200 Canadian enterprise and IT executives and administrators at giant Canadian corporations (500+ workers) throughout a spread of trade sectors. The research discovered that 63% of Canadian corporations surveyed didn’t have sufficient or had solely a base degree of information to make choices on whether or not to make use of a cloud service or their inner IT division.

A latest article from additionally signifies that there’s a substantial amount of confusion about cloud computing. The article makes reference to a latest research commissioned by Citrix Methods which included greater than 1000 adults within the U.S. The research confirmed that almost all respondents thought that the cloud is said to climate. 51% of respondents thought that the climate might intervene with cloud computing. Regardless of the confusion, the research additionally discovered that 97% of contributors are utilizing cloud companies at the moment with examples together with on-line banking, purchasing, social networks and file sharing. Additional, 59% of respondents indicated that they imagine that the “office of the long run” will likely be within the cloud which is considerably contradictory to the prevalence of cloud computing at the moment.

This perception above mirrors what we discover amongst our personal shoppers. Data of cloud computing is comparatively restricted and because of this, organizations could also be lacking out on vital alternatives to make their enterprise stronger by decreasing value and threat. Our hope is that this text supplies perception into cloud computing that will help you to evaluate its match for your online business necessities.

What’s cloud computing?

Initially, it is helpful to grasp the place the time period cloud computing got here from. It most definitely originated from using a cloud picture to symbolize a networked computing surroundings or the web.

A fast Google search will reveal various definitions for cloud computing. I like a definition I picked up from Wikipedia which defines cloud computing because the supply of computing as a service whereby shared assets, software program and data are supplied to computer systems and different gadgets as a utility, much like the electrical energy grid, over a community which is most frequently the web.

What are the varied cloud computing fashions?

To kind out among the confusion round cloud computing, it’s useful to grasp the varied cloud service fashions, of which there are three – software program as a service (SaaS), platform as a service (PaaS) and infrastructure as a service (IaaS).

SaaS is essentially the most extensively recognized flavour of cloud service. SaaS is typically known as on demand software program. With SaaS, software program and its related knowledge are centrally hosted and are usually accessed over the web utilizing a browser. What are some examples of SaaS? MailChimp, the applying we use to distribute our newsletters, is an instance. Google Apps is one other instance as is Dropbox, and the checklist continues to develop.

PaaS supplies the supply of a computing platform and required options to facilitate the deployment of purposes with out having to spend money on the associated fee and complexity of {hardware} and software program. Some examples of PaaS embody Microsoft Azure and Google’s App Engine.

The IaaS service mannequin permits shoppers to keep away from the procurement of servers, software program, knowledge centre house and community gear. Such assets are supplied as a totally outsourced service. Examples of IaaS embody Amazon’s Elastic Compute Cloud and Rackspace.

Along with the varied cloud service fashions, it is helpful to grasp the supply fashions by way of which cloud computing is distributed. The primary supply fashions embody public, personal, group and hybrid.

A public cloud affords infrastructure and options to most people and is often owned by a big group that sells cloud companies.

A non-public cloud is designed solely for one group. A non-public cloud could also be managed by the group which makes use of it, or by a 3rd get together, and the infrastructure could also be positioned on the location of the cloud consumer or elsewhere.

A group cloud is shared by a number of organizations and helps a group of customers, normally with some frequent curiosity, comparable to regulatory issues.

A hybrid cloud mannequin consists of two or extra clouds, for instance a private and non-private cloud, certain collectively by know-how to facilitate knowledge sharing and portability. Egnyte, a file storing and sharing service, is an instance of a hybrid cloud computing resolution.

What are some advantages of cloud computing?

Earlier this 12 months I participated in a webinar that featured a spherical desk of CFO’s commenting on what they believed to be the most important advantages of cloud computing. The advantages cited included the next:


  • Price financial savings over on-site installations
  • Anyplace anytime entry by way of an Web connection
  • Diminished dependency on IT help
  • Cloud options are most frequently quicker to deploy than on-site options
  • Cloud options usually allows organizations to purchase into a much bigger product with far more performance which might be value prohibitive if comparable performance was acquired by way of a non-cloud on-site resolution
  • IT can focus extra on value-add actions versus managing IT infrastructure as a result of infrastructure administration shifts to the cloud supplier
  • Cloud options usually contribute to the next:
    • Extra well timed monetary data
    • Optimizing enterprise processes
    • Connecting with workers and enabling employees to work remotely


What are among the dangers and issues related to cloud computing?

Not withstanding the advantages, there are a selection of frequent issues related to cloud computing. It is rather vital to fastidiously contemplate dangers that would affect your delicate data, regardless of whether or not you might be evaluating cloud or on-site options. In doing so, it’s also vital to guage dangers related to cloud options within the context of comparable dangers you can face with your personal on-site alternate options.

The most typical concern is safety. For many small and medium-sized organizations, safety with cloud options is commonly higher than on-site options as a result of respected cloud resolution suppliers can spend money on the talent units and capabilities to handle rising and evolving threats. Many small and mid-size organizations depend on part-time IT help or haven’t any devoted IT help in any respect. This mixed with always evolving IT dangers, would are inclined to counsel that almost all small and medium organizations simply cannot sustain with threats to their data property. To handle safety issues, a good cloud supplier ought to have the ability to present assurance related to the next:


  • Entry to knowledge – There must be a inflexible authentication course of that each one customers ought to undergo to entry their knowledge
  • Transmission – Knowledge must be encrypted because it travels out of your native web site to the cloud service supplier
  • Community – Robust safety must be in place to guard the cloud supplier’s community
  • Bodily entry – The cloud supplier ought to have the ability to exhibit strong controls over bodily entry to its amenities the place your knowledge will reside
  • Knowledge safety -The cloud supplier ought to have the ability to present assurance that your knowledge is encrypted when it’s “at relaxation” within the cloud
  • Privateness and Compliance – Your cloud supplier ought to have the ability to present assurance that it will possibly defend the privateness of your data and adjust to related requirements and laws that could be related to your group.


Availability of cloud options is one other concern. It’s related to evaluate the affect of a cloud resolution changing into unavailable resulting from circumstances comparable to an web outage or a technical failure by the cloud supplier. Once more such issues must be analyzed within the applicable context. Web outages, particularly elongated outages, are typically unusual. Respected cloud suppliers can most frequently exhibit very excessive ranges of uptime efficiency, and if issues happen, expert assets can be found to handle them. How does such a state of affairs evaluate with comparable dangers related along with your on-site various? What’s your expertise with downtime with on-site options and may you get well timed 24/7 help you probably have a crucial drawback? Availability dangers can be mitigated with using a hybrid cloud mannequin. Egnyte was referred to beforehand for example of a hybrid cloud mannequin for file sharing and storage. With this feature, ought to the web go down, you’ll be able to nonetheless have an area copy of your knowledge accessible.

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