Purpose of the BCG Matrix
Most businesses sell more than one product, and those products rarely all behave the same way. Some are growing fast, some are generating reliable cash, and some are quietly losing ground. Without a structured way to compare them, managers end up allocating resources by instinct or internal politics rather than by evidence.
A strategic portfolio analysis tool developed by the Boston Consulting Group that classifies a firm's products (or business units) according to two variables: the rate of market growth and the product's relative market share within that market. Also called the Growth-Share Matrix.
The matrix plots every product onto one of four quadrants. Each quadrant carries a label, a typical financial profile, and an implied strategic direction. The goal is to look at the whole portfolio at once and ask: where should money go in, and where should it come out?
Think of the BCG Matrix as a fund manager's view of a stock portfolio. Some holdings are high-growth and need more capital. Some are steady earners that pay dividends.
Some are speculative bets. And some are deadweight that the manager is reluctant to sell. The matrix makes all of that visible on a single page.