In most business system developments, the information model is developed separately from the functional model. A model is required that accurately describes realworld events and the objects on which they act. An Information Architecture is one that shows interactions between events and objects in the real world. Events are represented in software by object methods corresponding to the real-world event. The key to successful and maintainable business systems development relies on taking an Object Oriented approach in the analysis and design and making sure designs produced are quality designs, that the object classes have been correctly identified and methods allocated to them are ones where the method behavior is most appropriate to the class. Concurrent event execution can be resolved by delegating the event to the most suitable class required to handle the behavior and just having other objects referencing the event.