Our iterative and incremental lifecycle is divided into a set of development phases.
These phases are each composed of one or more end-user iterations through these
activities. The framework will guide end users through decision making on when to
undertake new iterations, which requirements to address in each phase, that is, endof-
phase milestones, and how much effort to put into each activity in each iteration.
The development phases are based on the unified process [Jacobson et al. 1999] and
research by Murugesan et al. [2001]. They have been tailored to the particularities of
web-centred EUSE.