The document summarizes the BCG growth-share matrix, a portfolio analysis tool developed by the Boston Consulting Group in the 1970s. The matrix plots a company's business units based on their relative market share and market growth rate to classify them into four categories: stars, cash cows, question marks, and dogs. Cash cows are stable business units with high market share but low growth. Stars require heavy investment to maintain high share in high-growth markets. Question marks have low current share but operate in high-growth markets, requiring investment to potentially become stars. Dogs have low share in low-growth markets and are candidates for divestment. The document provides examples of how companies like Colgate have used the matrix and outlines the