What it means in plain language
STLY is the default reference frame for booking pace and forecast accuracy. It controls for seasonality but not for events, demand shifts, or major calendar changes (like Easter falling in March vs April). Smart shops blend STLY with budget pace and 3-year-average pace to cancel out year-specific noise.
How STLY fits in the bigger picture
STLY doesn't live alone - it sits inside the Forecasting & Demand category and connects to 3 closely related concepts most working revenue managers track in the same breath. Pair this definition with the related terms below to build a working mental model - definitions in isolation are easy to memorize and easy to misuse.
Related terms you should also know
Each of these is one click away - start with whichever you don't already use daily: