10. What’s the difference, if any, between OLE and COM?

OLE is build on top of COM. The question is not strict, because OLE was built over COM for years, while COM as a technology was presented by Microsoft a few years ago. You may mention also that COM is a specification, while OLE is a particular implementation of this specification, which in today’s world is not exactly true as well, because what people call COM today is likely implementation of COM spec by Microsoft.

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