Comment by Prickle

Oh I wish that was possible.

Fact is if the customer wants to put their worksite management on AWS, you inevitably expose the OPC server and/or PLC to a Intranet. This is then inevitably connected to the internet in some way. The customer may or may not put barriers between them, but that's not up to us to decide.

This becomes especially a problem if they have multiple sites across a country or countries.

We have a customer that runs a factory on god forsaken WIFI, then dares to complain about a bad connection to said equipment. Thankfully, they have their own internal IT department.