An enterprise subsystem is
|“||the portion of an RFID system that analyzes, processes, and stores information collected by the RF subsystem. The primary role of the enterprise subsystem is to make the data collected by the RF subsystem useful for a supporting business process. An enterprise subsystem is made up of middleware, analytic systems, and network infrastructure.||”|
- Guidelines for Securing Radio Frequency Identification (RFID) Systems, Glossary, at B-1.