1. A method of managing capacity for providing a service to a service requester, said method comprising the steps of: providing a business process having one or more service inputs, at least one service output, at least one capacity constraint and a queue located ahead of said at least one capacity constraint, said queue having an upper queue threshold and a lower queue threshold and said at least one capacity constraint having a capacity level; gathering with a performance monitoring subsystem a set of business process data; and adjusting with a capacity management subsystem said capacity level of said at least one capacity constraint in response to said set of business process data gathered by said performance monitoring subsystem.