This functionality allows users to compare any budget or forecast with another version by simply dragging and dropping it on a report or sheet. This must be accomplished by a finance user with little to no training on the system.
Scenario: A retail company is preparing for the upcoming fiscal year. They have generated several budget versions to consider different scenarios - from an optimistic budget assuming high sales growth to a conservative one with low growth expectations.
Solution: The company can use a CPM system with functionality to easily compare their working budget with several what-if scenarios. This enables them to view different potential outcomes on a sheet, dashboard, or report. They can now facilitate more informed and more rapid decisions with the executive team.
This functionality is generally a core reason to purchase a CPM tool, as doing this in Excel is incredibly painful. The best tools allow you to drag versions next to each other, and insert a column that calculates the difference between the two prior columns (a basic A-B=C formula), and then might allow you to layer a chart over the top or on a separate page.
To make this work, the system must support enough live versions to accommodate your what-if planning. Meaning, if you plan to go beyond Best Case, Middle Case, Worst Case, you'll need more than 3.