What is the best way to share an R process/script with a non-R user?

I have an R script that makes some API calls and runs some calculations. I can't replicate this process within our business intelligence tool, but I'd like to share this functionality with non-R users. What is the easiest way for a colleague to run and access this script? Maybe a command line utility stored on a file server? Shiny is a no-go.

What about a plumber API?