Breadth of Use

Breadth of use is the number of distinct features a user touched in a period; it shows how many parts of a product a user engages, not how deeply.

Breadth of use is one of two engagement dimensions, its pair being depth of use: breadth says how many different features a user opened, depth says how much they did within each. It matters because a user who engages several varied features is usually stickier and less likely to churn, since the product is embedded in several parts of their work. But breadth alone can deceive: trying a feature once still counts it, so it is better to set a threshold (a feature used at least a few times) so accidental discovery is not mistaken for real use. The definition of a feature must also be stable; if every micro-event counts as a feature, the number balloons meaninglessly.