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In business, a cash cow is a product or a business unit that generates unusually high profit margins: so high that it is responsible for a large amount of a company's operating profit. This profit far exceeds the amount necessary to maintain the cash cow business, and the excess is used by the business for other purposes. The expression is a metaphor for a dairy cow, which after being acquired can be milked on an ongoing basis with little expense.
Risks of a cash cow include complacency, with management ignoring the need for change as market forces erode value; and ongoing turf wars between the management in charge of the cash cow and other managers trying to garner support for other products.
