The one thing that EC2 could do with is a fully fault-tolerant solution for clustered websites. We’re not able to truly factor out the single point of failure when load balancing. We’re getting round this by keeping another load balancer up and running as a spare, and automatically remapping the IP addresses should the first load balancer go down.

This will cause a maximum of a few minutes outage in the event of any server hardware failure, which is better than our existing setup, but it sure would be nice if EC2 handled this for you…

Having said that we’re pretty happy with the way EC2 works. I’m a full believer in the concept of Utility Computing – eventually computing power could well be provided in much the same way electricity is today…