This document discusses the challenges facing the architecture, engineering and construction (AEC) industry and how building information modeling (BIM) can help address them. It defines BIM and explains how it changes the nature of practice by integrating the design process. BIM allows for better visualization, coordination, analysis and supply chain integration. Firms can take a horizontal, vertical or progressive approach to adopting BIM. BIM improves productivity and accuracy by focusing on the building model rather than traditional drawings.