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by true_religion 2218 days ago
It would be better to say that your laptop is running software on the intranet, not the internet.

Also at least by convention, localhost is only accessible via the loopback interface. This allows it to be accessible even if there is no physical network to connect to, but also means that it is only accessible on the same physical/virtual computer that it is running.

To let other people in the coffee shop access your software you would need to connect to a public or private interface.