Most of the content of the following three phases—B (Business), C (Information System), and D (Tech-
nology)—consists in detailing the target and baseline architecture, measuring the gap between the two,
and evaluating the impact of change on all facets of the enterprise. The combination of these elements is
used to draft the roadmap for transition. This first draft of the roadmap is elaborated progressively
throughout phases B, C, and D, and serves as the foundation for phases E and F, which are in charge
of defining the transformation plan (Figure 2.3).