Abstract: The present invention guarantees that messages in a distributed computing environment are successfully delivered from an application sending data to an application receiving the data by maintaining a fault tolerant message delivery system in the event of system failure. This method of reliable message delivery uses at least four separate computing devices that communicate with each other via a Local Area Network. Each computing device has its own Receiver, Message Queue, and Transmitter, referred to as a Node, which are used for message transport. Each message is held in at least two Message Queues on two computing devices at one time until the message is successfully delivered to its final destination.

Abstract: The present invention allows Scenarios to be easily created and maintained via a graphical user interface and processed efficiently by re-using Actions and Action Chains and aggregating duplicated Actions and Action Chains. The method of building, maintaining, re-using, and aggregating Actions and Action Chains utilizes Event-Driven Information Systems and supports the three styles of event processing: simple event processing, event stream processing, and complex event processing.