The Assets tab is mainly used for preview of items inside of a category.
Within the settings, administrators will find a valuable feature labeled "Assets”. It is used to see how all products from configured object type will appear to users. Not only does it display a preview of the entire catalog, but it also dives deeper, showcasing the detailed view of products. It's an essential feature for ensuring everything looks and functions as intended before making the catalog live for users.
Two views are available in the Assets tab: Catalog preview and Details preview.