BCG matrix

Bruce Henderson of Boston Consulting Group created the growth-share matrix in 1970. It became one of the most widely taught strategy frameworks and one of the most frequently debated — both for its insight and its oversimplifications.

The four quadrants:

1. Stars (high growth, high share): These business units are growing fast and already leading their market. They require significant investment to maintain their position and fuel growth, but they're expected to become cash cows as the market matures.
2. Cash cows (low growth, high share): Mature market leaders. They generate more cash than they consume — the BCG prescription is to 'milk' them and use that cash to fund stars and selected question marks.
3. Question marks / Problem children (high growth, low share): Fast-growing markets where the business doesn't yet lead. They consume cash and could become stars if the market bet is right, or dogs if they can't gain share. Requires a deliberate invest-or-divest decision.
4. Dogs (low growth, low share): Low-growth markets where the business has weak share. BCG's original advice: divest or liquidate. In practice, many dogs are niche businesses that are still profitable — the framework can be too blunt here.

The BCG matrix appears on whiteboards during portfolio reviews, strategy offsites, and M&A discussions. Plotting the company's products or business units on the 2x2 is a quick way to structure a resource allocation conversation. BoardSnap AI reads the 2x2 layout, the quadrant labels, and the items plotted in each to produce a structured summary of the portfolio assessment.

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