Image similarity also called reverse image search has use cases far beyond just e-commerce. Explore large unlabeled digital image archives by display similar images. Clean up machine learning datasets by removing duplicated training images that might otherwise be used for training and testing.
Let your users find visually similar photos or products, fast and automatically.
Remove duplications, cleanup similar images, and products accidentally added multiple times.
It simply works on images. As long as you work with images you have a use case for it.