ABSTRACT
As the project enters the next phase of execution, the project manager’s responsibility changes from planning and leading to monitoring and controlling. As shown on Figure 1.1, there are three primary project constraints: time, scope, and resources (costs), which form a triangle. It is the project manager’s responsibility to monitor progress on all three, ensuring that the triangle remains in balance and does not begin to resemble the disconnected triangle shown as Figure 1.2. Controlling the triangle, although conceptually simple, is one of the most challenging responsibilities a project manager faces, because scope, schedule, and budget rarely remain constant throughout a project’s life cycle.
