How can cpp(C++) be best utilized when integrating a PyTorch model into a product?

I'm seeking a computer vision job and am practicing skills for the product development stage, where many sources suggest cpp is essential.

How can cpp be best utilized when integrating a PyTorch model into a product? I've discovered torchlib, torchscript, and cpp + ONNX as methods. Are there other approaches? Which would be most beneficial to practice?

Additionally, I'm curious about the specific capabilities sought by real companies in this field.

Thank you for reading!

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