The Importer extension gives a GeoServer administrator an alternate, more-streamlined method for uploading and configuring new layers.
There are two primary advantages to using the Importer over the standard GeoServer data-loading workflow:
Supports batch operations (loading and publishing multiple spatial files or database tables in one operation)
Creates unique styles for each layer, rather than linking to the same (existing) styles.
This section will discuss the Importer extension.