BIM, or Building Information Modeling, is a digital representation of the physical and functional characteristics of a building. It involves creating a 3D model that includes detailed information about the building's components, such as walls, windows, and systems like plumbing and electrical. This technology helps architects, engineers, and construction professionals collaborate more effectively throughout the project lifecycle. Using BIM improves project efficiency by allowing for better planning, visualization, and coordination among different teams. It helps identify potential issues early in the design process, reducing costly changes during construction. Overall, BIM enhances communication and decision-making in the building industry.