Array

Defining cloud computing

Must Read

Refinance Home Loan – Dos and Don’ts

Lending companies need your business. If you are taking out a refinance home loan, check out what your current...

Reduce Student Loan Debt

Aside from the hardships brought about by the high qualifications set by the various colleges and universities operating, another...

How Advertisements Are Triggered

The following is a quick walk-through of how an advertiser gets an ad displayed for a specific user query...
Admin
test

I have already opined in the introduction that cloud computing has led to a ‘marketing fog’, and this is no better illustrated than with the multitude of definitions for the term. I considered a number of well-known definitions of cloud computing, but I have chosen the NIST (National Institute of Standards and Technology) draft definition as my preferred definition because it is publicly available, it reflects the IT market and it is relatively simple, in my opinion. Quoting from draft number 15 (Mell and Grance, 2009):

Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (eg networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model promotes availability and is composed of five essential characteristics, three service models, and four deployment models.

The NIST draft definition goes on to describe these five essential characteristics (on-demand self-service, broad network access, resource pooling, rapid elasticity and measured service), three service models (Software as a Service – SaaS, Platform as a Service – PaaS and Infrastructure as a Service – IaaS), and four deployment models (Private, Community, Public and Hybrid Cloud); but this chapter provides alternative descriptions. See Figure 1.2 for a visual representation of the NIST definition and visit http://csrc.nist.gov/groups/SNS/cloud-computing for the latest draft.

Now, some industry experts do not like the use of the SaaS, PaaS and IaaS acronyms, but they are so firmly embedded in the cloud computing literature that they cannot be ignored so I will continue to refer to them in this book. For an alternative viewpoint I refer you to ‘Above the Clouds’, the 2009 technical report from the University of Berkeley (Armbrust et al, 2009).

 

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Latest News

Top 10 Provinces of Thailand Not to be missed for Travel

10 SuratthaniThe source of the proverbial Chaiya salted egg. Surat Thani is a province with many attractions,...

Underlight As Accent, For Power and The Main Light for Photography

Underlighting, in which fill or accent light comes from under the topic, is not widely used technique in the traditional Portraits, even though it will have...

How To Fix Overexposure As A Creative Tool, The Complete Guide

As an creative tool, overexposure is sort of underrated. What I’m close to propose could be a deliberate and well thought out technique for...

7D Mark II is Canon’s best DSLR cameras without full-frame sensor.

The expected long-awaited Canon EOS 7D Mark II are shipping in November for $ 1,799 without a lens. With a higher price tag, you...

Low key photography and How to isolate your subject.

Low key photography doesn’t depend on underexposure to make its point; the key to low key is that the majority of tones, even correctly...

More Articles Like This