Ecotect is a 3D building analysis software developed by Autodesk to help architects design more energy efficient and sustainable buildings. It allows users to analyze factors like solar exposure, thermal performance, lighting, and shading. The software imports climate data and converts it to model sunrise, solar paths, and shadowing. It also allows thermal, ventilation and wind simulations. Ecotect is advantageous for architects and designers as it empowers better decision making for sustainable design and creates more energy efficient buildings.