This document discusses the history and development of Building Information Modeling (BIM) technology. It describes how BIM originated from earlier computer-aided design (CAD) and computer-aided manufacturing (CAM) software in the 1950s and 1960s. Key developments in BIM software and standards over time are outlined from the 1970s to present day. The document also explains how BIM enables 3D, 4D and 5D modeling for construction projects. It provides details on the data required and flow for 3D, 4D and 5D BIM models. Benefits of BIM for visualization, coordination and construction are highlighted.