The Impact, Confidence and Ease scores can then be used to rank features and ideas. The ICE scale suggests you rate every ideas on a scale of one to ten in three areas: Impact, Confidence, and Ease. Those three numbers are multiplied, and the product is the ICE score.
The higher the Impact and Ease ratings, the more impactful the feature or idea is and the easier it will be to implement it. On the other hand, the lower the Confidence rating, the lower the chance this feature or idea will be successful.
By ranking these three factors, you have a tool to prioritize the features and ideas you want to invest the most time in or the ones you should pass by in favor of more significant features.