TDWI has made public a recent presentation on "Business Intelligence In The Cloud" by Steve Dine of Datasource Consulting. It adds some interesting information to my recent blog asking Will The Cloud Democratise BI?
Apart from a good overview of some of the risks and benefits, Steve also quotes from a recent Informationweek 'Cloud Computing Survey' that (unsurprisingly) the biggest concern today is security:
There is also some nice detail on Amazon's EC2 Instance Pricing:
* EC2 Compute Unit (ECU) – One EC2 Compute Unit (ECU) provides the equivalent CPU capacity of a 1.0-1.2 GHz 2007 Opteron or 2007 Xeon processor.
You can open the powerpoint presentation here. If you are interested in the cloud, then it's well worth the 5 minutes to review it.