Scanner
A pluggable component of Enterprise Data Catalog that extracts specific metadata, such as source metadata or profile metadata, from external data sources and stores the metadata in the catalog. A scanner typically maps to a single resource type. However, there can be more than one scanner for a resource type. Examples are profiling scanner and lineage analyzer.
A scanner performs a scan job on the metadata sources to fetch metadata into the catalog. When you have scanners for newer resource types ready, you can plug in those scanners to Enterprise Data Catalog without having to upgrade Enterprise Data Catalog.