Annex B (informative) Client Server vs. Publish Subscribe ToC Previous

B.1 Overview ToC Previous Next

OPC UA Applications represent software or devices that provide information to other OPC UA Applications or consume information from other OPC UA Applications.

This Annex contrasts the Subscription functionality available in the Client Server communication model with the data distribution mechanism of PubSub. See Part 1 for an overview of the complete functionality available with the Client Server model.

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