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Defining Cloud Computing: Part 6 – IaaS

February 23rd, 2009 Leave a comment Go to comments

Infrastructure as a Service

Amazon AWS is the largest of all the IaaS providers. Where SaaS offers a complete application as service and PaaS offers the ability to develop an application, IaaS doesn’t care about the application at all. IaaS provides the underlying hardware and operating system resources to do anything you want. IaaS has also been referred to as Everything as a Service.

IaaS offers CPU, memory, storage, networking and security as a package. IaaS is the virtual machine in the sky. In general, with IaaS, you choose from a range of operating systems (usually some flavor of open source), a size for your hardware (number of CPUs and CPU power) and an amount of storage.

There are a number of successful IaaS providers: Amazon, Joyent, GoGrid and FlexiScale. While Amazon is the best known of the providers, Joyent is also huge. Joyent hosts many Facebook applications and they host the social network LinkedIn, among others. In addition to proving that Amazon is not the only game in town, this also proves that real businesses (although without much of a business plan) are running in the cloud. It also shows that businesses with a need to scale are doing so.

The benefits of IaaS, in addition to the ability to scale, are the costs to get started and the ability to pay only for what you use. For a startup or small business, one of the most difficult things to do is keep capital expenditures under control. By moving your infrastructure to the cloud, you have the ability to scale as if you owned your own hardware and data center (which is not realistic with a traditional hosting provider) but you keep the upfront costs to a minimum.

What does Cloud Computing change?

LewisC



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  1. Alison
    March 10th, 2010 at 11:37 | #1

    Another great IaaS has recently transitioned from beta into general availability: ReliaCloud. They offer clouds servers, and soon, cloud storage. http://www.reliacloud.com.

  2. April 5th, 2010 at 06:14 | #2

    Rackspace is also a leading IaaS provider…

  3. Fawkes
    August 29th, 2011 at 04:17 | #3

    “By moving your infrastructure to the cloud, you have the ability to scale as if you owned your own hardware and data center (which is not realistic with a traditional hosting provider) but you keep the upfront costs to a minimum”.
    How do i move my infrastructure to the cloud???? I dont understand

  1. July 15th, 2010 at 05:42 | #1
  2. November 11th, 2010 at 23:07 | #2
  3. January 6th, 2011 at 11:27 | #3
  4. April 16th, 2012 at 11:38 | #4
  5. March 22nd, 2013 at 20:21 | #5


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