SELF-CHECK
Project B budget is 12000 and forecast is 13500. What variance should you report?

REFERENCE REASONING
Forecast overrun is 1500 units, or 12.5% of budget. Label it as forecast variance, retain the reporting date and explain the main driver; it is not necessarily money already spent.

This is a reasoning reference for the supplied fictional case, not an executed app or tested cloud deployment. Alternative approaches are valid when supported by stated assumptions and evidence.
