Brief summary of IAAs, paas, SAAS

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 have te 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?

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?

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?

Original article: http://cloudcomputing.sys-con.com/node/2218739