Amazon has announced a new service - SimpleDB
We are pretty happy with our use of Amazon's S3 (Simple Storage Service)
I've been curious to try Amazon EC2 (Elastic Compute Cloud) but I haven't found a good application yet.
One of the big limitations with EC2 is that it's not well suited to running database servers. I've been waiting for them to improve support for this, but instead (or at least, first) we get SimpleDB.
I wonder if someone will make Rails work with SimpleDB as the database? How would the performance compare?