Managing digital assets is one of the features of PIM. For entire catalog products, digital assets volume is very large.
PIM only allows uploading digital assets through browser(confirmed with Optimizely #885640, which is not reliable for large volume of digital assets. We observed issues like digital assets duplicated and not uploaded in some cases. This approach also involves comparatively more efforts to upload digital assets.
Please built automated approach for uploading digital assets to PIM.