Describe an information system project that might have three subsystems. Discuss how three ...

An iteration is a mini-project in that it often takes a smaller component, or subsystem of a larger system, does analysis, design, and implementation within the iteration. So if there are three subsystems, AND if they are small enough, each subsystem might be done in a single iteration. (Larger subsystems might require multiple iterations each.)

Another approach might to verify that the more complex or risky parts of the system are handled within the first iteration. Some work should be done within each subsystem for each iteration because doing so reduces schedule dependencies.