The document discusses the BCG matrix, which is a tool created by The Boston Consulting Group to help companies analyze their product portfolio. The BCG matrix categorizes products as stars, cash cows, question marks, or dogs based on their market share and market growth. Stars are products with high market share in a high-growth market, while cash cows have high market share in a low-growth market. Question marks have low market share but are in a high-growth market, and dogs have low market share and are in a low-growth market. The document outlines strategies for managing products in each of these categories.