The Growth Share Matrix, developed by the Boston Consulting Group, is a strategic tool used to evaluate a company's product portfolio. It categorizes products into four quadrants based on their market growth rate and relative market share: Stars, Question Marks, Cash Cows, and Dogs. This helps businesses allocate resources effectively and make informed decisions about product development and investment. In the matrix, Stars represent high-growth, high-share products that require significant investment to maintain their position. Cash Cows are low-growth, high-share products that generate steady revenue. Question Marks are high-growth, low-share products needing careful analysis, while Dogs are low-growth, low-share products that may be candidates for divestment.