This document discusses the GE/McKinsey matrix, which was developed in the 1970s to help companies evaluate their business units. The GE matrix uses two factors - business strength and industry attractiveness - to categorize business units into nine cells of a 3x3 grid. It aims to identify business units that are strong and in attractive industries, warranting high investment, versus those in weak industries or with weak business strengths. The document outlines the various factors used to evaluate business strength and industry attractiveness, provides an example of how business units are plotted on the matrix, and compares the GE matrix to the BCG matrix.