scope:

This specification describes the OPC Unified Architecture (OPC UA) security model. It describes the
security threats of the physical, hardware, and software environments in which OPC UA is expected
to run. It describes how OPC UA relies upon other standards for security. It gives an overview of
the security features that are specified in other parts of the OPC UA specification. It references
services, mappings, and profiles that are specified normatively in other parts of this multi-part specification. This part of the specification is informative rather than normative. Any seeming ambiguity between this part and one of the normative parts does not remove or reduce the requirement specified in the normative part.
This Part 2 is directed to readers who will develop OPC UA client or server applications or implement the OPC UA services layer.
It is assumed that the reader is familiar with Web Services and XML/SOAP. Information on these
technologies can be found in SOAP Part 1: and SOAP Part 2.