Here is a brief tutorial for people to run R on Windows Azure Cloud (OS=Windows in this case , but there are 4 kinds of Linux also available)
There is a free 90 day trial so you can run R for free on the cloud for free (since Google Cloud Compute is still in closed hush hush beta)
Go to https://www.windowsazure.com/en-us/pricing/free-trial/
Some slides I liked on cloud computing infrastructure as offered by Amazon, IBM, Google , Windows and Oracle
I have compared some of Amazon’s database in the cloud offerings with Google’s and especially the Google BigQuery API in my latest article. With more than 2 years under its belt for development, Google BigQuery API is a good service to test out if you want to reduce dependencies on database vendors.
Read it at
Google BigQuery API Makes Big Data Analytics Easy