We are an existing company 40+ years old.  
We do our order processing on a C# based system, NOT connected to our NopCommerce in any way.
NopCommerce is running on Azure.
I envision having a folder or folders on NopCommerce that I would watch.
If an excel file, or text file, whatever type of file format we decide on, is placed into a folder, REWARDS, for example, on Azure.
A report or some type of interface, would see file exists, open it, process the file, (adding rewards points to the accounts inside file), using sql statements, then renaming/moving file to a OLD folder.

We assign reward points based on what level of product you buy.  Our internal system can generate a file showing account/order info and the number of reward points customer should get.

Need to automate updates to Nop.

Is anyone doing something similar?