While there may be disagreements on what data modeling, encoding, and transportation technologies to adopt for Industrial IoT, there's one aspect that's evidently being agreed upon across the board. ​ The fact that Publish-Subscribe architectures are, by far, more suitable for this new world of hyper-connectivity. ​ One implementation of such an architecture for IIoT is OPC UA PubSub, which defines a mapping of Binary and JSON encoding over an MQTT, AMQP, and UDP-based PubSub network. ​ To understand how OPC UA PubSub can be applied in Real-World Industrial scenarios, I had a conversation with Praveen Kumar Singh, who is the Chief OPC Solutions Architect at Utthunga, a Product Engineering and Industrial Solutions company that engineers industrial-grade digital products and solutions for industrial OEMs, Industries, ISVs, and Service Providers. ​ Below is the outline of our conversation. ​ ✅ What is OPC UA PubSub? ✅ Real World Applications of OPC UA PubSub ✅ Embedded OPC UA PubSub Applications ✅ Configuration Mechanism of OPC UA PubSub Components ✅ How Discovery works in OPC UA PubSub networks ✅ How Information Modelling Works in OPC UA PubSub ✅ Consuming OPC UA PubSub using Third Party Applications ✅ OPC UA PubSub over TSN explained ✅ Use Cases for OPC UA Client-Server combined with PubSub ✅ Sensor to Cloud Using OPC UA PubSub ✅ Security mechanisms in OPC UA PubSub communication ✅ uOPC PubSub Bridge overview ✅ About Utthunga