The LOD (Level of Details) Mesh is a representation of the 3D Mesh that contains multiple levels of detail, decreasing the complexity of the model as it is divided into more levels. Fewer details are available as zooming out in the model.
The LOD Mesh is useful for visualization on the web and from different types of devices, such as desktop PCs, tablets, smartphones, when fast loading is needed. It is the ideal output for a smooth and efficient navigation on online viewers.
For step by step instructions about how to export the LOD mesh: 212218463.