I have just started using Amazon EC2 with Windows Server 2008.
My goal is to provide SaaS (Software as a Service) with one Amazon EC2 instance per license.
I am unsure how I can bill the end users?
Are tools available that will track the time that the users are logged in to Windows Server?
Or can this information be derived from Amazon EC2 billing?
If so, are tools available to report end user usage from the Amazon EC2 billing?