Pareto principle (80/20 rule)

The 80-20 rule, also known as the Pareto Principle, asserts that:

“80% of outcomes (or outputs) result from 20% of all causes (or inputs)”

In business, a common goal of the 80-20 rule is to identify and develop the 20% of your features or products that 80% of your customers want. This reduces costs and time to market.