Wrapping my head around OPC UA - Part 3

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And we are on to Part 3! ... In this video I look at the difference between how Classic OPC clients/servers connect and how OPC UA clients/servers connect to one another in moving from using COM to TCP/IP as the transport.
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As usual you are ... Very clear and straight forward explanation which comes from deep understanding which takes a lot of studying and searching for the smallest details.
When I noticed that you started publishing videos about OPC I said that these videos where I will understand OPC clearly. I am following you since I watched your course of Mastering Modbus RS-485 in one hour.

Good Job. Please keep going <3

ahmedamirmohamed
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Are DDE and COM/DCOM same? what I studied is classic OPC client communicates with classic OPC server via DDE if server and client are in same computer. Whereas OPC client communicates with OPC server via network DDE if server and client are in different computers. For example if I want to communicate rslinx with excel, I use OPC/ DDE to communicate with excel. So please clarify. Thanks for your OPC UA series and Udemy courses.

ibrahimkaleel