A Feed is a means of organising and categorising data in Stroom. A Feed contains multiple Streams of data that have been ingested into Stroom or output by a Pipeline. Typically a Feed will contain Streams of data that are all from one system and have a common data format.

A named data Field within some form of record or entity, and where each Field can have an associated value. In Stroom, Fields can be the Fields in an Index (or other queryable Data Source or the fields of Metadata associated with a Stream, e.g. Stream ID, Feed, creation time, etc.

A Filter may refer to a Processor Filter or a Filter Element in a Pipeline.

The Fully Qualified Domain Name (FQDN) is the complete, unambiguous address of a device or service on the internet, specifying all domain levels including the hostname, domain name, and top-level domain. For example server57.some.domain.com.