New auto-scaling, monitoring and load-balancing tools for Amazon's Elastic Compute Cloud are now in public beta. A feature called CloudWatch lets EC2 users monitor resource usage and system performance through details such as disk reads and writes, or network traffic. All three services are available now to EC2 customers in the U.S., although those who want official support will have to buy a premium support contract. The capabilities will be available in Europe sometime in the next few months. The offerings are priced separately from baseline AWS service, but in a similarly pay-as-you-go fashion.
More info: AWS blog