## 3.1 Overview

It is assumed that basic concepts of OPC UA information modelling and metamodel of the AAS are understood in this companion specification. This companion specification will use these concepts to describe the AAS Information Model. For the purposes of this document, the terms and definitions given in OPC 10000-1, OPC 10000-3, OPC 10000-4, OPC 10000-5, OPC 10000-7 and “Details of the Asset Administration Shell – Part 1” V2.0 (see section 2) as well as the following apply.

Note that OPC UA terms and terms defined in this companion specification are italicized in the specification.