SketchUp is a 3D modelling software widely used in architecture, interior design, engineering, and construction for its intuitive, accessible approach to building and visualising spaces. Unlike more complex tools such as AutoCAD or Revit, SketchUp has a relatively gentle learning curve, making it popular with both professionals and beginners who need to quickly prototype ideas or present concepts to clients. Its push-pull interface lets users extrude flat shapes into three-dimensional forms with minimal effort, and a vast library of pre-built models (available through its 3D Warehouse) speeds up the design process considerably. It works well at both the conceptual and detailed stages of a project, and integrates with rendering tools and other software to produce polished, photorealistic visuals when needed.