Revit was originally developed by Charles River Software and acquired by Autodesk in 2002 - its name is short for "Revise Instantly," a nod to its core idea: every wall, door, and schedule is a live view of one shared model, so a single change updates everywhere else automatically. That is the parametric, database-backed approach the rest of this glossary keeps referring back to - families, worksets, schedules, and the Revit API all exist inside Revit specifically, not as generic BIM concepts. Three separate disciplines (architecture, structure, MEP) work inside the same core product, usually coordinating through linked models and worksharing rather than separate software.