Retopology serves to optimize the surface of a 3D model. Roughly speaking, it helps to turn a flawed or inaccurate mesh of, say, a CAD model into a realistic and detailed one. As a result, a manufacturer gets a photoreal 3D model fit for usage in 3D renders. As well, retopology allows turning high-poly 3D models, including the scanned ones, into realistic but lightweight low-polys. This way, the models can be used in AR and VR, online platforms, and apps.