By cloud computing, most think of Amazon EC2 and S3, but there really are more options, as shown in one resource listed on that entry.
I should note I didn't create that list. Someone else did. I don't generally do an entry just pointing to that of another (we often see way too many dupes in the CF blogosphere that way), but in this case it's a non-CF blog and therefore many readers here may not see it otherwise.
Also, some will know that I do like to do such resource lists myself, whether as blog entries of that sort, or as resources lists offered on my site, so I really appreciate this blogger's efforts here.
Hope that may help someone interested in the topic of cloud computing. (And yes, if someone would ask if this might be a good topic for the Online ColdFusion Meetup, it would be, and we've had a few sessions on the topic. You can find them either by doing a search for "amazon" on the UGTV site (which has more than just Meetup recordings, of course) or by scanning the list of all previous CF meetup recordings.