116 ◾ Enterprise Architecture A to Z
e contents of some of the cells are well understood in the industry today. In fact, it is easy
to buy commercial off-the-shelf (COTS) application development tools and methodologies that
support building the models shaded in Figure 4.1.
For example, Pinnacle Business Group (and its predecessor companies) invested a number of
years in developing a robust methodology including tool support for doing the architecture plan-
ning (row 1), business process engineering (row 2) and application development (rows 3, 4, and 5)
as shown in Figure 4.3.
Although many enterprises have been building information systems for a number of years, in
general, few of them have actually understood enterprise models; that is, t