Help! please… Cloud Computing and IaaS, PaaS, SaaS

I was wondering whether the community out there could help me. If you don’t know the answer, please blog about it and point people here so we can find the answer, if there is one…

Few months ago I read in Robert‘s blog about the distinction he made between “Infrastructure as a Service”, “Platform as a Service”, and “Software as a Service” when talking about the Cloud Computing continuum. I am writing two articles on Cloud Computing and I’d like to find out whether there was a prior use of those terms in the same context before Robert‘s entry. I am not aware of any others and Robert didn’t know of any prior references. Do you?

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