What you'll sell next month, per item and per location, is the input to your ordering, staffing, cash planning and hiring — which means last-year-plus-ten-percent doesn't just produce a bad forecast, it quietly corrupts every decision downstream of it. This turns your sales history into per-item forecasts with honest prediction intervals rather than a single confident number, detects and reports the seasonal patterns it found so you can sanity-check them against what you know