Subscribing to Autodesk Civil 3D offers many benefits, including the following:
Use Shared Views to collaborate online with people you're working with. You can upload a shared view, which is a visual representation of your model or design, from within your Autodesk product. By sending a link to the shared view to your collaborators, they can view, and comment on, the shared view in Autodesk Viewer, without needing an Autodesk product.
Available in Autodesk Civil 3D 2019