From CMDB Cloud:
Track application layer dependencies, fish-out recurring incidents, monitor performance and keep your SLA's gleaming. Monitor processor, memory, disk, bandwidth etc along with standard checks such as HTTP, Ping and FTP with our integrated Amazon Cloudwatch monitoring or downloadable monitoring agent. Create alert groups and recieve notifcations when unusually hight load or bottlenecks occur. Keep track of website response times and automatically link performance graphs to incidents. We keep your data for years, you dont need to manage storage and you get to dig into historical data any time you like.