The modelling of business processes is vital not only for business processmanagement, but also for implementation of enterprise systems. For example,when we look at the process life cycle introduced earlier, three of the sevenphases involve business process modelling, to a large extent. But apart fromthat, the models that are generated in these three phases are used in all the sevenphases of the business process management life cycle. The phases where thesemodels are developed are in the second phase of process modelling; and it isused in the third phase, where we do the analysis; and is used in the fourth phase,where we improve upon the as-is models, come up with the to-be models, andmodel them, using whatever tools that are available. But then, the to-be modelsthat are developed in the fourth phase are used in the process implementationphase, in the execution phase, in the monitoring phase, and even in the processidentification phase, when you think of it as a life cycle.