Developed by Earl in 1989
A multiple methodology inquires IT investment more closely with the strategic aims and direction of the organization, and its key needs.
Three strategy formulas are:
A top-down approach – use critical factor success (CFC) to establish objectives;
A bottom-up evaluation – evaluate current systems;
Inside-out innovation – create new strategic options.
The purpose is to identify through internal and external analysis of business needs and opportunities to relate the development of IS applications to business