The Communication Standard for the Internet
as the best fit for IoT applications has already been developed, tested and deployed in live environments around the world since it was fully released in 2009.
OPC Unified Architecture (UA) is platform-independent, service-oriented architecture developed and maintained by the OPC Foundation. As the interoperability standard for industrial automation, OPC has become an integral part of most SCADA (Supervisory Control and Data Acquisition) systems. As data systems expand beyond their traditional roles to include more sensor data and consolidate data from multiple systems, it makes sense that the OPC Foundation has remained at the forefront of the standardization process and have developed a communication standard that has been embraced by proponents of Industry 4.0 and the Internet of Things - companies like Microsoft, Oracle, SAP, GE, and many others,
OPC UA is universally embraced because it directly addresses the obstacles faced by organizations involved in IoT implementation projects. The problem of interconnectivity, for example, is exactly the problem that the communication standard was developed to address. Today, OPC drivers exist for thousands of different devices, and many devices today are manufactured with embedded OPC servers to allow for exactly this type of interoperability with other devices and systems.
The concerns about the usefulness of multi-system
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