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@CloudExpo: Blog Post

Brief Summary of IaaS, PaaS, SaaS

How the three offerings differ with respect to flexibility, maintenance and portability

In this posting, I summarize my prior three posts on the three cloud computing offerings: Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS).

I concentrate how the three offerings differ with respect to flexibility, maintenance and portability. One of the greatest challenges companies face when moving to the cloud is security. Thus I will devote an entire blog post in the future, to security concerns.

Flexibility

  • How much flexibility do you have with each offering?
  • What can you change or modify within each cloud offering to suit your needs?
  • Can you modify the software, the look-and-feel, the branding, the hardware even the source code with each cloud offering?


Flexibility

Maintenance

  • How much do you need to maintain with each cloud offering?
  • Do you need to hire programmers, data analysts, system administrators or just application users to use each cloud offering?
  • Can you modify the software, the look-and-feel, the branding, the hardware even the source code with each cloud offering?


Maintenance

Portability

  • If your application is hosted at either an IaaS, PaaS or SaaS provider, what are your options if you need to transfer your application and data to another provider?
  • In what format will your data be provided to you?
  • How easily can you download or extract your data and in what format will it be provided to you?


Portability

More Stories By Jonathan Gershater

Jonathan Gershater has lived and worked in Silicon Valley since 1996, primarily doing system and sales engineering specializing in: Web Applications, Identity and Security. At Red Hat, he provides Technical Marketing for Virtualization and Cloud. Prior to joining Red Hat, Jonathan worked at 3Com, Entrust (by acquisition) two startups, Sun Microsystems and Trend Micro.

(The views expressed in this blog are entirely mine and do not represent my employer - Jonathan).

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