Civil 3D is a civil engineering design software developed by Autodesk. It is primarily used for designing and managing civil infrastructure projects, such as roads, highways, and land development. The software provides tools for creating 3D models, analyzing terrain, and generating construction documentation, making it easier for engineers to visualize and plan their projects. With its integrated features, Civil 3D allows users to perform tasks like grading, drainage design, and alignment creation efficiently. The software supports collaboration among project teams, enabling them to share data and updates in real-time, which enhances productivity and accuracy in civil engineering workflows.