Software and Systems development and integration companies increasingly face the challenge of developing systems of unprecedented scale and complexity. Mainstream systems and software engineering has not convincingly won the battle against the core problems of developing the ‘right’ system when there are large numbers of requirements (hundreds or even thousands), and the necessity to deploy a large team to complete the project within a specified time-frame and/or for a fixed cost.

Using Behavior and Composition Trees to analyse requirements makes real progress with these core problems, producing integrated views that enable high-yield early defect detection. The application of Behavior and Composition Trees on large and complex industry projects has proven to be an extremely effective technique of risk identification and minimisation in the early life-cycle. In addition to being a high-yield defect detection technique, the construction of Behavior and Composition Trees from requirements yields a “natural architecture” of the system as defined by the requirements with no effort additional to the review effort.

The justification for, the processes, representations and results of applying this constructive approach to tackling the core problem hindering productively developing large-scale, dependable systems will be presented in a practical tutorial.