Examples of inter process communication(IPC) in Windows

I am wondering about actual examples or instances of inter process communication (IPC) specifically for Windows, which we encounter on a daily basis开发者_JAVA技巧 (which happen under the hood or otherwise) while using our laptop/desktop.

For example:

Between a parent process and child processes?

Between two unrelated (in hierarchy) but cooperating processes?

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Simple examples could be "Embedding a excel spreadsheet in a word document" and "Drag and Drop".