OPC-UA: the Universal Language of Industry 4.0
Forgive the obscene title of this article, for implying OPC-UA is nothing but a simple communication protocol is a great injustice. Indeed, OPC-UA encompasses this, but also so much more. It is a living, breathing, specification: one that outlines an information-centric architecture that is interwoven with security systems-systems which permeate a definitive rule-set for device modelling and communication.
At its essence, OPC-UA is a platform-independent, machine-to-machine communications architecture that focuses on providing an object-oriented approach to modelling data.